There are 253 items filed under subterranean sites.

Boyers, Pennsylvania

Office of Personnel Management Retirement Operations Center

The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence
17 Dec 2014
Manchester, United Kingdom

Victoria Arches

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites
15 Dec 2014
Surrey, England

Witley Wonder Underwater Ballroom

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial
18 Nov 2014
Cobleskill , New York

Secret Caverns

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art
17 Nov 2014
New Athos, Georgia

New Athos Cave

The second largest in the world, this massive underground void has its own subway
14 Oct 2014
Waxahachie, Texas

Superconducting Super Collider

A Texas-sized particle collider that was abandoned due to its Texas-sized budget
10 Oct 2014
Pilsen, Czech Republic

Pilsen Historical Underground

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries
07 Oct 2014
Nevşehir Province, Turkey

Kaymaklı Underground City

While not Turkey's deepest underground city, this subterranean redoubt is the largest
22 Sep 2014
Nevşehir Province, Turkey

Derinkuyu Underground City

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors
19 Sep 2014
Nevşehir, Turkey

Özkonak Underground City

This ancient subterranean megalopolis is known for the hot oil traps that were installed above each of its entrances
18 Sep 2014
El Paso County , Colorado

Cheyenne Mountain Nuclear Bunker

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational
17 Sep 2014
Paola, Malta

Ħal Saflieni Hypogeum

This subterranean necropolis holds three floors of antler-dug grave caves
10 Sep 2014
West Liberty, Ohio

Ohio Caverns

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King"
19 Aug 2014
Brighton and Hove, England

Brighton's Victorian Sewers

To literally keep their waste out of their own backyards, the citizens of this English city built an impressive sewer system that is still in use today
05 Aug 2014
Hinterbrühl, Austria

Seegrotte

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day
28 Jul 2014
Melbourne, Australia

Melbourne Storm Tunnels

The labyrinthine storm tunnels beneath the city of Melbourne are ruled by a band of urban explorers
24 Jul 2014
Bedford, Indiana

Bluespring Caverns

The longest navigable underground river in the U.S. is home to countless blind and albino animals
14 Jul 2014
Taingy, France

Carrière d'Aubigny

This former limestone quarry is now a subterranean wonderland of grand stonework
02 Jul 2014
Nelson, Nevada

Techatticup Mine

This famous Nevada gold mine was once a hotbed of Wild West shenanigans and is now open for tours
19 Jun 2014
Borino, Bulgaria

Devil's Throat Cave

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat
11 Jun 2014
Coober Pedy, Australia

Crocodile Harry's Underground Nest & Dugout

This eccentric cave dwelling is bizarre even by the standards of a subterranean town
02 Jun 2014
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