This massive library holds what was once the largest book collection in the world.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A 16th-century horror show built in a lovely Italian garden.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Dramatic river bend surrounds a natural red-rocked pedestal.

These fantastically named natural pools look like something out of a Scottish myth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Surprisingly Delicious Asian-Style Hot Dogs.

Danish observation tower designed to look like a giant beer bottle.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

A giant wooden soda bottle pays homage to a distinctly British drink on the very spot where it was invented.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

This historic hotel invented the chocolate brownie.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

At 929 pounds and 26 feet tall, this stainless steel fork can only be used by the likes of King Kong.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

Because sometimes you need to make a batch of frites even when the stores are all closed.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.