While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

An abandoned masterpiece of Soviet Brutalist architecture.

A century-old prison in the heart of Vilnius is now a lively bar, dance club, and artist residency.

A small monument in Lithuania marks the geographic center of Europe—or at least one of the claimants.

A curious art park at the geographic center of Europe is home to 3,000 television sets and other wonders.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

St. Augustine's record-setting narrow street was designed to protect against pirates.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Despite being made of a seashell mortar, the crumbling remains of this historic Florida mill are still standing.

A building so large that it has its own weather.

This spooky road cut through a mound of ancient coral might be haunted by a witch.

This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

The oldest house of worship in Palm Beach has a wonderful tropical garden.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Former villa and estate of James Deering developed to preserve native tropical forests.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

A mysterious castle built as a monument to lost love.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

In the depths of the Everglades, one man has dedicated his life to studying the elusive Skunk Ape.