This small bronze pyramid marks the center of Belgrade, but some say it is a Masonic symbol.

Unconventional site where the tracks of Zurich tramcars intersect.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Baroque celebration of the end of the Great Plague of Vienna.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

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

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

The hallucinogenic center of the ancient world.

A tiny church on a man-made island in the Adriatic.

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

The unusual sculptures are believed to be powerful political symbols.

After this medieval Serbian fresco was hidden for centuries, an image of it became one of the first to be sent into space.

A hidden stream deep in the mountains creates one of the largest tufa waterfalls in Serbia.

In the hinterlands of Serbia's capital, a giant reflective mushroom houses an aeronautical history of the former Yugoslav republic.

An idyllic traditional timber village on a picturesque hill was built for a film.

Sealing couples' love since just after World War I.

Structure built from the skulls of vanquished foes.

This 15th-century Serbian Orthodox monastery also contained a school for illuminating manuscripts.

A little theme park full of miniature monasteries and churches, made by hand.

Abstract monuments express sorrow and resilience at the site of a horrific massacre in Nazi-occupied Serbia.

The figure atop this globe is from a Serbian play about a merchant's travels around the world.

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.