This popular pilgrimage site offers a hole filled with holy healing dirt.

A sprawling collection of over 106,000 toys from around the world.

A multi-storied adobe complex has been inhabited for more than a thousand years.

Legends surround this jagged rock formation in the New Mexico desert.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

For the last century, this international border within a small town has appeared and disappeared various times.

Once a year, local students "clean" this statue with a champagne shower.

This behemoth bovine guards an Estonian town and is a memorial to the lost species.

This remote sandstone cliff has one of the richest collections of Livonian petroglyph marks.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

A railway bridge leading nowhere stands lonely in the middle of a meadow.

Outstanding, eerie frescoes and decorations fill this 19th-century monastery.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

The oldest arboretum on the Dalmatian coast doubles as the gardens of Kings Landing in "Game of Thrones."

This old and disused water tower has received a new life as an art gallery with a piano staircase.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

Large miniature theme park with 100-plus models.

Step back in time and witness the fall of Constantinople.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A fountain standing as a testament to a doomed alliance.