Check out the underground party scene at the "Burning Man of Brooklyn."

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Nondescript elevator doors open to reveal a stunning, surreal world.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

Four alabaster giants contemplate the tides on the shore of Denmark.

Six beautiful wooden giants are hidden around Copenhagen.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

A walkable map of the world, made from soil and stone by one man.

The world's largest maze is a nature park with nearly 200 decision points.

A public display of random paleontology.

The final home of the legendary Danish sailor said to have lived to be 146 years old.

Over 9,000 brains collected between 1945 and 1982 demonstrate the results of untreated mental illness.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

An eccentric artist's abode in this small Italian town has been transformed into a surreal temple of mosaic madness.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

A madman's personal garden filled with 1,000 sculpted heads.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

Crushed coral and crystals give the sand its signature coloration.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.