A carousel trades in its classic horses and calliope for endangered species, native flora and fauna, and a modern soundtrack.

L.A.'s oldest operating bowling alley is a beautifully restored homage to its speakeasy days.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

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

The modern birthplace of Irish freedom.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

The chaotic studio of one of the 20th century's most important artists has been preserved down to the dust.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

This hidden collection of everyday objects illustrates life within communist Poland.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

This monumental work of art symbolizes the coming together of a previously divided city.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

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.

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

Berlin's old airport.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

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

A fascinating insight into daily life in the Eastern Bloc.