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

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

A historic fire call point.

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

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

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

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

A sculpture serving as an homage to Pope John Paul II.

Romans decided this 16th-century "talking statue" was so ugly, they named it after a primate.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

The "Great Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

A huge enchanting public park just outside the ancient walls of Rome.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

2300-year-old Roman road connecting the empire.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

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

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

Berlin's old airport.

A fearsome dragon clings to a corner of Munich's city hall.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.