A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The beautiful baroque library of the Hapsburg empire.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

In the northernmost city in the world, it's illegal to be buried because it’s too cold for bodies to decompose.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

A white Buddhist temple with a golden restroom.

A battle between nature and architecture in the Cambodian jungle.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

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

A serious museum dedicated to two German comedians.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

These delicate sand pyramids look like naturally occurring gothic spires.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Mountain where Jesus was first tempted by the Devil.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

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

The "Little Ones," show Portugal in full miniature splendor.

A majestic hotel for dreamers rises from the center of a fairytale wood.