This historic roadhouse has many tales to tell of San Francisco's early history.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

On top of a hill, this Catholic church overlooks the most Catholic island in Greece.

The Goose Girl of Göttingen, Germany might well be the most kissed girl in the world.

A comedic homage to a beloved German actor.

Once a crime hotspot, this refurbished underpass is now home to a bookstore and a mural celebrating the history of Manila.

The largest United States military cemetery overseas.

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

Neighborhood in Jerusalem is home to the ultra-orthodox haredim.

17th century mosque for Shah Abbas' harem.

Armenia's premier center of astrophysical research was established during the Soviet era.

Featured in one of the most iconic scenes in cinema history.

An unusual bronze bus shelter is actually an art installation commenting on the city's history with the Nazi party.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

Bohemian paradise covered in majestic forests.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

One of the tallest lighthouses in the world also serves as a monument to the fallen of World War I.

Two bronze wolves atop this large rock honor the "Wolves of Tuscany" brigade of World War I.

This beautiful 14th-century castle perched on a promontory overlooks the Bay of Trieste.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

This historic stone bridge has an entire neighborhood clinging to its sides.