Real bones which are said to have belonged to a Polish dragon.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

The largest coin pyramid in the world is a carefully balanced stack of over 1,000,000 pieces.

Ever-growing collection of devils in art.

An abandoned masterpiece of Soviet Brutalist architecture.

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

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

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

A century-old shot ball factory tower is open to the public once a year.

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

This concrete residential area doubles as an open-air gallery.

The 1852 novel "Uncle Tom's Cabin" lends its name to a subway station, a street, and several shops on the edge of Berlin.

This TV tower once secretly housed a GDR intelligence team.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

Tiny memorials honor individual victims of the Holocaust.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

A 12th-century fortress containing some of Berlin's oldest buildings.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

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

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A slice of central Asia in the middle of Berlin.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

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.