This hidden green space is the city's second largest conservatory.

Eighty million natural history specimens call this gargantuan museum home.

This antique thermometer honors the creator of the first universal temperature scale.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Certain traditions prevail on the least-visited island of the Aran Islands.

This mine was once used to defend the coast from attack during World War II.

Commemorating the landing of William of Orange with his European army on their way to the Battle of the Boyne.

This garden has existed for more than three centuries.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A 30-foot-high stream of chocolate flows continuously at the Lindt Home of Chocolate.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

Browse through a century of this principality's first popular export.

Liechtenstein's royal family calls this medieval alpine castle home.

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

A museum dedicated to the tragedy of Bloody Sunday.

These murals stand as reminders to the troubled history of this Northern Ireland city.