This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.

Colorful and chaotic stacked hotel in North Holland.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Southern Italy's spinning top village.

Three underground crypts and a pointed arch under the bell tower make this cathedral unique among Romanesque churches.

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

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

A perfectly circular lake is formed by the crater of an ancient underwater volcano.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

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

The design of this beautifully crafted building was inspired by Norwegian glaciers.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

The statue of a legendary giant who carried Christ and shouldered the world's sins.