An ancient knight and a symbol of the city's freedom.

Gargoyle head that brings good luck.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

The world's oldest bookshop still in operation.

This antique thermometer honors the creator of the first universal temperature scale.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

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

The site of the first battle of World War II.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Tiny memorials honor individual victims of the Holocaust.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

A restaurant and observation deck built in a unique broadcasting antenna.

Berlin's old airport.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Art and a pun, all in one.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

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

This Polish cave has housed a dragon, a brothel, and an enduring legend.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

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

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.