This small-town Connecticut restaurant gives each diner a free book from its vast library.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A series of sculptures beneath the waves promote ocean conservation and support coral reefs.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

Hundreds of enormous icebergs drift through this waterway every year.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Smallest house in Toronto sits on a lot meant to be just wide enough for cars to drive through.

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

This medieval hilltop village was abandoned at the end of the 19th century, after existing for more than 500 years.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

For those going through a life transition, a place to leave behind a piece of your former self.

An acoustic anomaly with a mysterious cause.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

An enormous, inside-out glass globe built in 1935.

The last of the 19th-century booze-free bars has been slinging teetotal tonics for over a century.

This riverside restaurant has been serving customers since 1146.

This snack factory boasts several tributes to its popular line of rice crackers, including a quasi-shrine.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

More gold than anywhere else, ever.

A network of concealed passageways lies within a busy London Underground station.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

Thailand's distressed elephants find peace at this Chiang Mai sanctuary.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.