Though it's no longer a functioning train depot, this castle-like structure is an important piece of Oklahoma history.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Peek inside Howard Hughes' garage at this Hollywood-themed art installation.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

Megachurch turned Catholic church comprised of 10,000 glass panes.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

A tiny Greek Orthodox church from the Ottoman era hides on a busy city street.

This Byzantine Church was moved from Paris to Athens block by block.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

The site where hundreds of Greeks were tortured by the Nazi secret police is now a cosmetics store.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

Underneath one of the region's most historic roads lies the home of Plato's successor.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

A measuring mishap led to these artificial stone ladies losing their stomachs.

This 1920s Dutch barge is now a floating bookstore.