A medieval church with largest and oldest collection of Renaissance frescoes in France.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

The world's most famous cheese caves.

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

A chapel on a volcanic core, marking the end of a successful journey.

The world’s oldest military museum has remained largely unchanged since the last days of the Austro-Hungarian Empire.

Physicist’s epitaph provides final confirmation to a career of turmoil.

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

Dedicated to the works of the legendary special effects artist.

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

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

These small, triangular, colorful houses are a staple of Madeira Island.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

A shrine-like museum entirely dedicated to soccer superstar Cristiano Ronaldo.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

A natural wonder in south Denmark.

Discovered in a peat bog, these horned helms come from a thousand years before the Viking Age.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

One of London's lost rivers runs through a pipe over the tracks of this subway station.