Romania's triumphal arch looks out over Bucharest.

A hidden three-foot-wide house separates these two regal churches.

Elaborate tile work in this railway station tells the story of Portugal.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

Real bones which are said to have belonged to a Polish dragon.

The site of the first battle of World War II.

An underground city of salt.

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

A Viking-style brewpub named for a Norse sea giant, in the heart of fjord country.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

3,000 market stands in five former Zeppelin hangars.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

A black cat protests the City Guild in Riga's Old Town.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

This micro-nation may be some sort of prank, but its constitution sure seems official.