Indianapolis, Indiana Catacomb Tours

To be offered beginning in June, the Indianapolis, Indiana Catacomb tours will take the public beneath City Market into mostly unknown catacombs that date to 1886. The cavernous walkways, featuring brick archways and columns of limestone, encompass more than 20,000 square feet and were part of Tomlinson Hall, a structure along Market Street that burned in 1958.

Having been mostly unused except for storage in recent years – and as an emergency homeless shelter during a winter storm of 1912, the tours will open up a part of the city that has been unseen by most, and spark some ideas on a future reuse for the catacombs. Suggestions for reuse include an underground park or nightclub, but a study conducted in the 1990s estimated a cost of more than $7 million just to bring the catacombs up to modern safety standards.

San Francisco, California Armory Tours

San Francisco ArmoryConstructed in 1914, the 220,000 square-foot armory hosted the National Guard until 1973 and then remained vacant for three decades. It was purchased in 2007 and then subsequently rehabilitated for adult film sets by Peter Acworth, owner of

The tour lasts 90 minutes and includes the armory’s five floors and includes both historical and risque trivia. The walk includes the preserved shooting range and the subterranean Mission Creek that flows through the basement. It also includes… a tour of a plush lounge and dungeon, along with props, and perhaps a peek at a live filming if it is in progress.