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

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

A heritage structure designed in 1882 honors a Parsi philanthropist.

An ancient iron pillar in Delhi that seems to be rustproof.

A Syrian family keeps memories of their homeland alive at this sweet shop.

Taste freshly foraged yarrow and black locust blossoms at this ambitious cocktail bar.

Puppet theater and museum holding a collection of more than 300.

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

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

This antique thermometer honors the creator of the first universal temperature scale.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

Several 12th-century ruins can be found inside this historical market.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

During the renovation of this bas-relief, the constructors added one unusual element.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

Modern art commemorates one of the first military actions of World War II.

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

Museum dedicated to "the man who moved the Earth."

A blooming house of worship for the masses.

Art and a pun, all in one.