This sprawling bookstore spans four floors and has more than a million books in stock.

A cozy bookstore and coffee shop in the heart of Cartagena's Old City.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

The world's largest secondhand book market is a haven for bibliophiles and bargain hunters.

She asked for a potato cellar and over the next 23 years he gave her a network of holy caves.

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A priceless work of art created by the saint's own blood sister hangs in a San Antonio basilica.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.

The lovely lake that was naturally dammed, then naturally destroyed, then unnaturally saved.

The room where Vincent van Gogh died.

Thousands of artifacts tell Mongolia's military history, from the Bronze Age to the present.

This spiritual landmark for practicers of Shamanism is drenched in milk and vodka and covered in blue scarves.

Hidden treasures belonging to Mongolia's most revered and multi-talented monk spent decades buried in the Gobi desert.

A mysterious phallic rock on the grounds of a Buddhist monastery.

Two large posteriors in one giant statue.

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

Every president in history is immortalized in bronze in downtown Rapid City.

A beautiful maze marks where three countries meet.

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

No one knows why ancient labyrinths were built on this tiny northern island.

Does this strange mural depict witches battling beneath a penis tree?