Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

An 18th-century viewpoint across the surrounding highlands.

A symbol of hope, survival, and national character, especially after it rose phoenix like from the flames.

This ancient Corinthian helmet is South Korea’s only national treasure of Western origin.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

One of only a handful of seaside temples in Korea, this sacred space is home to a legendary healing Buddha statue and a traffic safety prayer pagoda.

A family of distorted sculptures stands outside Seoul's former imperial palace.

This human-made pond is part of a Korean palace complex first built in the 7th century.

An early Korean refrigerator.

Numerical symbolism abound at East Asia's oldest observatory.

This tomb's name derives from a famous painting of a white horse found inside.

What looks like a birch tree smushed between two pieces of glass often confounds commuters.

A man has revenged his true love's betrayal through tears and stone genitalia.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

A wooden street sign is the last remnant of this 400-year-old alleyway.

Stockholm's narrowest alley is barely over two feet wide.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

This centuries-old rooster survived a devastating fire.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.