One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

A museum marks and documents the site of the Titanic's launch.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

Hear the quietest sound from across the dome.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

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

It's always summer at the beach inside this former airship hangar.

Cold war icon and onetime "hole" in the iron curtain.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

A fascinating insight into daily life in the Eastern Bloc.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.