A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

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

One of Ireland's most infamous prisons for rebels including men, women and children.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

A saintly relic hidden in a Prague church basement.

Macabre astrological automaton clock dating to the late 1400s.

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

Metro station with a claim to rock n' roll fame.

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

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

Started as a kitchen garden, now the second largest botanical garden in the world.

In a small town outside Jerusalem, a roadside diner is devoted to all things Elvis Presley.

Oldest Protestant church in the Middle East, designed to resemble a synagogue.

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

An iconic view point of the Sea of Galilee offers a look into Israel's past.

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

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

This ancient Irish tower could easily have stood in for Rapunzel's prison.