This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Fountain where visitors can earn a license to be mad.

A little sculpture with a large wardrobe.

An Austrian house of bones filled with hundreds of intricately painted skulls.

A black cat protests the City Guild in Riga's Old Town.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

The footprint of a frustrated devil in Munich's Cathedral.

Gargantuan home of Russian science.

A serious museum dedicated to two German comedians.

A church of bones, decorated with 40,000 human skeletons.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Water and windows define this defensive Italian well.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Christ's blood preserved in a Belgian town.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

Go surfing on this urban wave, "hacked" by local surfers.

A mushroom-shaped outcropping that has come to be the symbol for an entire town.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

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

An ancient Egyptian temple in the middle of Madrid, Spain.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'