The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Commemoration of a sea voyage gone mysteriously wrong.

The largest tidal whirlpool in the Western Hemisphere.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

A deserted 20-lane highway runs through Myanmar's empty capital city.

This giant squid sculpture sits near the spot where a real-life specimen was captured in the late 19th-century.

A small Canadian town founded as a refuge for Loyalists following American Independence.

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

A serene desert oasis speckled with ancient artifacts.

Ancient serpentine sacrifice holder that has stood the test of time.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

The only quarter of the Old City not dedicated to a major world religion.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Legend says this sacred tree was a gift from goddess Athena.

This underground transport hub doubles as an art gallery.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

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

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

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

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

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.