Unbeknownst to most passersby, this marble statue standing outside an office building is a genuine piece of second-century Rome.

Take a few seconds to look at this abandoned, art-filled station as you pass by on the subway to Ueno.

A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.

This iconic sluice gate is a favorite haunt for joggers, fishing enthusiasts, and even ghost hunters.

The last remaining predreadnought battleship in the world has been a museum for nearly a century.

A small island with no monkeys but plenty of military ruins.

This 14th-century temple is also known as the "Temple of the Golden Pavilion" for its gorgeous gilded reliquary hall.

1,001 carved statues of the Buddhist God of Mercy, each with a unique face.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

The once highest point in China blends symbolic design with a kick of adrenaline.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

London's smallest police station is barely the size of a phone booth.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

A historic, reportedly haunted pub that provided inspiration for several famous adventure novels.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

A hidden plaque is the only reminder of the lost palace where two storied English kings were born.

Visitors to this park are welcomed by an ancient Japanese megalithic tomb that dates back to the sixth century.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

This monument celebrates this shopping district's past history as a feudal silver mint.

The original "capsule building" is a masterpiece of Metabolist architecture.