A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

Abandoned power station once home to a squatter community, now being developed into an arts center.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

More gold than anywhere else, ever.

New York City's smallest piece of private property.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

Flames have been burning within this mountain for more than 2,500 years.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

This wrecked ghost ship has been rusting on a Greek beach since the 1980s.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

A small memorial to a deadly night in Serbia that shook the world before it was swept under the rug.

Nestled in the heart of Milan is a real wunderkammer of morbid curiosities.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

The mark of the Devil's horns on a marble column in Milan.

Da Vinci's equestrian statue, 500 years in the making.

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

The secret medieval communication system will whisk your words above the noise of the crowd.