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

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

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

The fairy tale castle of the "fairy-tale king."

A small but immensely extravagant palace built by the "Night King."

A fearsome dragon clings to a corner of Munich's city hall.

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

Underground hospital complex constructed by slave laborers during the German occupation of the Channel Islands.

A statue erected in honor of the toadish nickname given to Jersey residents by the French.

A passage grave used in neolithic rituals.

This natural crater along the coast of Jersey may take its name from the devil statues who have watched over it.

This mansion oasis contains gardens, sculptures, and fountains just off the busy Plaça Kennedy in Sant Gervasi.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

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

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The ruins of a 12th-century seaside castle on the southwest coast of Scotland.

Unusual British home built to disguise a water tower.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

The biggest onshore wind farm in the United Kingdom.