St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

A World War II torpedo launch station abandoned off the Polish coast.

The largest fountain in Bratislava.

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

The oldest funicular in Lithuania has been climbing this steep hill since 1931.

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

A narrow strip of land is home to the tallest migrating dunes in Europe.

A memorial to the murdered Jews of Kaunas.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

The silly symbol for an underground protest group is now scattered around the city.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

Climb around the high waterfalls on series of iron ladders and bridges within the wildest gorge in the Slovak Paradise.

The ruins of a 13th-century monastery that long served as a place of refuge from wars and raids.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

The site of the first battle of World War II.

A statue honors the children who fought Nazis in Poland.

This Communist-era residential block is one of the longest residential building in Europe.

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

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.