Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

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

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

An icy lake tucked among jaw-dropping alpine panoramas.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Monasteries on rock pillars, once accessible only by frayed ropes.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This Transylvanian church has changed its denomination four times.

Something's watching you.

A memorial museum to the political prisoners who were held at Sighet Prison, once one of the most feared places in Romania.

A countryside Romanian cemetery filled with colorful crosses bearing lyrical, ironic, or satirical rhymes.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

The world's most active stratovolcano is almost always erupting.

This Arabesque Italian castle was built with a primitive, if ingenious, air-conditioning system.

Thousands of well-dressed mummies below a monastery.

Religious structure known for its sculpted details.

Romania's only crater lake with water as pure as if distilled.

The ancient Greek Titan guards this massive dam holding a lightning bolt to symbolize electricity.

A muddy alien landscape that is home to rare species of exotic plants.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This snug medieval lane is one of the narrowest streets in the world.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."