Places mkowal Wants to Go

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Ride the subways of yesteryear.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

This naturally-sourced hot spring is now home to a clothing-optional resort.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

The world's longest known cave system.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Become a prohibition rebel.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

Sail in for a ’dam good slice.

A historic shipbuilding town is home to a sail-through fish-and-chips shop.