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

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

Dedicated to a synagogue that was destroyed after having survived World War II.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

A surreal statue honoring Prague's favorite literary son.

Steadily reminding Czechia of its past.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

The solemn exterior conceals an opulent interior of this 17th century church.

An exquisite Baroque church in Vienna's old town.

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

Dine amidst exotic plants at this former royal greenhouse.

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

Built by the Portuguese colonists in the early 16th century, this fort is one of the oldest European structure in Asia.

Hindu temple of the dead home to hundreds of long-tailed macaques.

The first Catholic church in Singapore is a Neo-Gothic colossus with a rich architectural history.

A historical convent known for taking in bad luck babies left on its doorstep is now an upscale shopping center.

Singapore's landscaping project is home to 18 incredible Supertrees.