Catholics make up 84% of Ireland's population but this Dublin museum remembers the small but important Jewish community.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

The ruined remains of the airport Claus von Stauffenberg departed in his failed attempt to kill Adolf Hitler.

The hidden lair of an alchemist rediscovered in a 2002 flood.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

This TV tower once secretly housed a GDR intelligence team.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.