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

The most visited, and possibly most controversial, museum in Germany.

One of downtown Berlin's last reminders of its Communist past.

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

This museum is home to a sugar sculpture of the Berlin Airlift Memorial.

The "Prussian Versailles" that is as glorious today as when it was built.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

Bursting forth from a historic German neighborhood, these day-glo palaces are now a bright fixture in the town.

This German monument honors the so-called "Prince of Mathematicians."

A six-story, asymmetrical tower filled to the brim with scientific experiments.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

This 17th-century "unicorn" was cobbled together from the skull of a rhinoceros, the legs of a mammoth, and the horn of a narwhal.