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

The first museum dedicated to exploring humanity's cultural relationship with the celestial world.

The ruins of a creative scholar's fantastical unfinished sanctuary act as his massive gravestone.

This kitsch eatery is chock-a-block with bric-a-brac.

This Florida resort community is where the Amish come to have fun in the sun.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

Climb right into the heart of this colorful Iceland volcano.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Australian Lake set aglow by Noctiluca Scintillans.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

A science teacher's dream.

An encyclopedic collection of mammal penises.

The glowing blue Nymphaeum of Emperor Tiberius.

Tour the sci-fi-esque reality of governmental disease management.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

One man's ambition created this psychedelic log home.

Walk in the footsteps of the gods and straddle two tectonic plates.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.