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

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

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

A striking symbol of the Bulgarian capital.

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.

A fountain standing as a testament to a doomed alliance.

Large miniature theme park with 100-plus models.

A marvel of Byzantine engineering under the streets of Istanbul.

These unusual rooms on wheels are holdovers from the 1960s.

A wall within the institution displays the names of 13,000 Jews who took refuge in the city during World War II.

The ancient settlement attracts tourists from all over looking to learn about the Chinese vision of the afterlife.

Why walk on this historical site when you can zoom down instead?

The most famous location in China was home to whole dynasties worth of imperial rulers.

17th century mosque for Shah Abbas' harem.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

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

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A musical instrument played by the sea.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.