Japanese national treasure originally built in 593 CE.

The 10,000 Torii shrine.

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

Every autumn, this hillside is ablaze with red summer cypress.

Hot springs monkey spa in the middle of Hell's Valley.

A magical place that lets you play in and explore the world of Studio Ghibli.

An exquisite tunnel of cascading flowers.

This historic franken-chapel is the oldest wooden church in the world, at least part of it.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

There’s a hidden military meme engraved on the World War II Memorial.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Shattered columns and Egyptian pyramids outside of Paris.

Small French town or alien garage?

Buddha and Jesus tower over this French mountainside headquarters of the Aumism religious cult.

Limestone grottoes turns everyday objects into stone.

The haunting concrete remains of a Nazi pebble crusher can still be found in this small French commune.

Beneath the city of Lourdes, France is a massive, concrete church.

Green labyrinth formed by a karstic maze hidden in a preserved oak forest.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.