Underground Systems

Explore the world's most visited monument in the most comfortable and complete way. Visit areas of the Colosseum not accessible by regular-ticket holders. Step on the exclusive Arena floor OR descend into the Underground section (depending on the option you select during booking). Walk the steps of the Gladiators and find yourself in the backstage of the most famous games in Ancient Rome. Then, take a journey back in time from the 10th century B.C. to the 5th century A.D. at the Roman Forum and Palatine Hill. Chart a course through the archaeological tribal beginnings of Rome and marvel at the beauty of ancient temples and ruins. Options available for small-group and private guided tours.

This tour explores some of the best hidden details, secret buildings and spaces, and untold stories that add wonderful bits of color and texture to the overall narrative of Chicago. On this tour, we will explore the famous and mysterious Chicago Pedway, a system of underground tunnels connecting 40 blocks downtown, popping in and out of buildings to see beautiful and fascinating interior spaces. You'll learn to use this system that most locals don't even fully know or use, and you'll be encouraged to continue exploring Chicago on your own after the tour!

On this day we take you to the biggest and worldwide known Slovenian cave system – the Postojna caves. Amazing two million years old and 21 km long system of underground caves is one of the most easily accessible networks of underground caves in the world. First, you will experience the ride by electric train, after that, a guided walk will follow through a series of cave halls with drop stones, pillars, and translucent curtains that create unforgettable impressions. The underworld system is home to the mysterious, unique, and rare amphibian Proteus Anguinus, or "baby dragon" as it is popularly called here. Back in the daylight, the trip will continue towards the astonishing castle of the robber knight Erasmus. For centuries dramatically hanging in over a 100-meter-high vertical cliff, it's waiting for you to enter and discover its secrets, legends, and myths. Driving through the green scenery, we return to Ljubljana.

Explore the world’s largest subway system, the beating heart of the city that never sleeps. – See the architectural ghosts of the nearly forgotten and partially abandoned, Chambers Street station nicknamed the “Grand Central of Downtown” – Discover the remnants of Union Square Station as you learn about a hidden art installation thousands of riders walk by everyday – Use the 6 train as your own time machine as you ride through abandoned subway stations that most seasoned NYC commuters don’t know exist – Explore the birth of the NYC subway system through amazing archival photos not available to the public – Learn about the comically short route of the mythical “Subway before the Subway,” Alfred Ely Beach’s Pneumatic Transit System Guests will need one MetroCard swipe or OMNY tap to enter the subway. Please note that although you will see abandoned subway stations from the train, the Metropolitan Transit Authority (MTA) doesn't grant public access into them under any circumstances.

The tour offers a chance to learn about the history of Downtown Eureka Springs – starting before the founding of the town, the people who have made history downtown, and the unique geography of three underground systems – caves and cliffs, the Mud Street rebuild, and the creek that runs under it all. Walking through the entertainment and shopping district, you get a feel for life as it was, the art district it is now, and see the hidden treasures throughout. Told in stories and vignettes along the way, the tour is a treat for all ages. You visit an intact underground storefront covered over in the making of the Underground. This is only open to visitors to our tour. This is not an adventure tour. The underground systems are explained, but only the underground storefront is visited.

Explore an underground river system and 2 cenotes at the same location. All the photos listed here you will see in person. You will be swimming through different cave rooms under stalactites and hanging tree roots for approximately 1,5 hours with a life jacket which allows you to float therefore you do not have to be a great swimmer. As it is possible to get lost if you are navigating on your own, this location requires a guide. After the cave rooms have been explored, you will be able to spend time on your own without a guide to swim and take photos. Be prepared to have the most surreal and otherworldly experience of your lifetime.

Explore the world-famous Puerto Princesa Underground River, a UNESCO World Heritage Site and one of the New 7 Wonders of Nature. This enchanting underground river tour offers a rare chance to navigate through a limestone cave system teeming with stunning rock formations, mysterious caverns, and unique wildlife. Immerse yourself in the pristine beauty of nature, as you glide along one of the longest navigable underground rivers in the world—a true must-see for adventurers and nature lovers!

In the Old Town Hall’s enigmatic underground we will discover not only former Romanesque and Gothic houses, but even an original street. The labyrinthine subterranean system is older than the Town Hall itself, and the complex of medieval halls, passages and tunnels is the largest of its kind in Prague. At the point where the unspoilt streets of Prague’s Old Town give way to the redeveloped Jewish Quarter, you will see how Prague progressively grew in height.

On this fantastic walking tour you'll join our expert guide for a tour of the world's oldest underground system. Learn all about the history of the 'Tube' as you travel through history from one of London's earliest, original stations to its newest and most futuristic. Hear how the networks was built and the variety of roles it has filled in its long history. Fans of trivia and fun facts will also hear some interesting facts along the way.

Take a tour of Chicago Loop's Pedway system, a network of underground pedestrian tunnels. We'll also go above ground to view some special Chicago sights. Our tour begins in the lobby of the Swissotel with a brief overview of the Pedway system.  We then descend into the Pedway and head to the Cultural Center.  After a brief tour of the Cultural Center and its famous Tiffany Dome, we return to the Pedway to visit Macy's department store and its famous Tiffany ceiling, then stop by the store's iconic Walnut Room. Back to the Pedway, we head west to the Civic Center plaza to see the Picasso sculpture and view the Chicago Temple and its Sky Chapel, one of the world's tallest church buildings.  A brief walk to takes us to City Hall and Marriage Court then to a nearby L Stop. A quick train ride takes us to the origin/terminus of Route 66 where we'll enjoy the Art Institute’s lion statues then Millennium Park's to Cloud Gate sculpture (aka, The Bean), Lurie Gardens and Crown Fountain.

Did you know that it was possible to visit the fascinating remains of the patrician "Domus" of Imperial Rome? Thanks to virtual reconstruction you will feel like you are in the time of the Roman Empire. Start your experience with a multimedia video which shows the past and the present of the most important monuments, pick up your official ticket and admire the virtual reconstruction of rooms, walls, mosaics, peristyles, kitchens, furnishings and decorations. The combined effects of the new projection technology and audio system deeply engage visitors, giving them an unforgettable immersive experience of the Domus. Also, a multilingual audioguide is available with the new audio system featuring individual headphones.

On the cold days, rainy days, and Heat waves, Montrealer's and travelers like to escape to the Underground City. Come with me and visit some of the most fascinating architecture, art, tunnels and trendy boutiques. We will make some interesting picture worthy stops. It may seem like a Maze but for me it is an indoor oasis. Along the trip you will learn about some local spots & the metro system to help you get around town with a charm. There's more but it's a secret ; ) Let’s enjoy the moment!

You will get to know the hidden part of the city of Marsala; the one created by the quarrymen during the extraction phase. It will be a city with a particular architecture, made up of limestone pinnacles that rise from the depths of the extraction and a succession of majestic walls and overhangs that make the landscape very similar to the Grand Canyon. It will be a slow and relaxing walk that will take us from the countryside level to 30 meters of depth. The first stretch will allow us to get to know the various spontaneous aromatic plants that flood the route with colors and smells; we will observe the characteristics of the limestone rock that makes up and delimits the open-air quarries and we will talk about this current extraction system. After a stop for refreshments, we will proceed into the quarries in tunnels which, due to their size, can be defined as extensive cathedrals of calcarenite with their 25 meter pillars and massive walls that alternate with the voids dug by the quarrymen.

Meet your tour guide by the fountain of Neptune in Municipio Square and enjoy the tour of the historical center with its ancient Greek streets,the Roman underground ruins and the countless churches. You will see not only the Greek and Roman area but also the medieval and Baroque areas. At the same time,you will perceive the diversity of religious belief systems co-existing in society, as well:a mixture of Pagan and Christian icons can be seen in San Gregorio Armeno market, where you can also explore several artisan shops. Besides, the “Neapolitan” culture is expressed in the typical local food as well as in the narrow streets full of players and dancers that will colour your walk with unbelievable effects.After the free time, the tour guide will reach the monumental area of Naples, here enjoy the view of medieval Angiò’s castle and the Theatre of San Carlo.Opposite to the theatre you will find “Galleria Umberto I” and than you will stroll in Via Toledo and Piazza Plebiscito.

Join our Colosseum Underground and Arena Exclusive Private Tour and visit the Hypogeum and the Arena levels of Rome's iconic monument with special, extremely limited access. Explore the Colosseum's secret tunnels beneath the arena where the famous Roman Gladiators prepared for their gladiatorial shows. Discover the system of corridors, hidden trap doors, chambers, and cages where they held exotic animals before letting them into the arena. Continue on the 1st and 2nd levels of the Colosseum, and hear about the amazing engineering genius of the Romans who built this extraordinary monument. After the Colosseum, you will continue to the Palatine Hill and Roman Forum with your tour guide. One of the largest archaeological areas in the world, the ruins of Ancient Rome still stand reminding us of a civilization that ruled the world for centuries, and their fame still has not faded.

Skip the line and explore thoroughly the world's most visited monument with a private guide. Visit areas of the Colosseum not accessible by regular-ticket holders. Step on the exclusive Arena floor and descend into the Underground section. Walk the steps of the Gladiators and find yourself in the backstage of the most famous games in Ancient Rome. Then, take a journey back in time from the 10th century B.C. to the 5th century A.D. at the Roman Forum and Palatine Hill. Marvel at the beauty of ancient temples and chart a course through the archaeological tribal beginnings of Rome and its evolution into one of the most powerful Empires of all time.

Explore Tokyo's underground music scene with first time concert goers and music enthusiasts alike. From hole-in-the-wall basement bars to skyscraper DJ venues, follow us into the rabbit hole of Tokyo's music culture. Tour Highlights: DJ Bar: The evening commences at a classic vinyl bar in the heart of Tokyo's music capital. Experience the local nightlife amongst the backdrop of citylights while sipping expertly crafted cocktails and feeling the bass of the sound system. Live House Excursion: Next, we'll guide you to a vibrant live-house, a stage for emerging and established artists alike; feel the raw energy, bands or solo acts bring the venue to life, creating an atmosphere charged with the electricity of live performance. Cozy Music Bar Vibes: The tour concludes in a hidden gem that captures the essence of Tokyo's local music culture. Unwind in a laid-back setting, where classic hits create the perfect backdrop for connecting with fellow music enthusiasts.

Natural Wonder: The Underground River is a UNESCO World Heritage Site and one of the New 7 Wonders of Nature. It is a unique geological formation and offers an extraordinary experience of navigating through an underground cave system. Booking a tour allows you to witness this natural wonder firsthand. Spectacular Scenery: The Underground River tour takes you through stunning landscapes of limestone cliffs, lush rainforests, and crystal-clear waters. The beauty of the surroundings is truly captivating and offers fantastic photo opportunities. Biodiversity: The Puerto Princesa Subterranean River National Park is a biodiversity hotspot, home to various species of plants, animals, and marine life. During the tour, you have the chance to spot wildlife such as monkeys, reptiles, and different bird species. It's a unique opportunity to connect with nature and appreciate its diversity.

Colosseum Ancient Rome and Undergrounds Catacombs Exclusive Tours. Go back in time with this guided tour of the Colosseum, Palatine Hill, and Roman Forum in Rome. Explore the first and second tiers for great views. Then walk through the ruins of Palatine Hill and the Roman Forum with your guide, an art and archaeology expert. After your Colosseum tour, take a break and get ready for an in-depth experience in one of the most exciting places in Rome, the Catacombs on the Ancient Appian Way. With a de luxe transfer, reach the catacombs and descend into a complex network of underground tunnels, among the longest in the world, where you can admire ancient frescoes, crypts rich in inscriptions, small mausoleums, sarcophagi, and tombs. You'll also find the burial of famous people like popes, martyrs, and even some apostles. The catacombs we'll visit (San Calisto, San Sebastiano, or Santa Domitilla) will change depending on the day.

Cu Chi underground tunnels: Located 60km from Ho Chi Minh City, Cu Chi is now considered a heroic district for its role during the American war in Vietnam. It is legendary for its network of tunnels, which extend over 220km, and is a popular destination for both Vietnamese and foreign visitors.