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

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

The beautiful baroque library of the Hapsburg empire.

Legends surround an ancient tree trunk riddled with nails for good luck.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

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

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

What looks like a suicide in progress is actually a statue of Sigmund Freud.

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

Macabre astrological automaton clock dating to the late 1400s.

Steadily reminding Czechia of its past.

A building so large that it has its own weather.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Where manatees are the snowbird vacationers in these balmy Florida springs.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.