This historic castle is one of the oldest and most impressive in all of Japan.

Visit a haunted Mughal mosque and the tomb of a Sufi saint and his disciple.

Nicknamed the "Spirit of Paul Klee," this colorful apartment building features an array of multicolored panels.

On a corner of the Ardmeanach peninsula on the Isle of Mull, a 50 million-year-old fossil tree hides in the coastal cliffs.

The rock carving that became an internet meme.

A set of beech hedges planted in the 19th century forms a tunnel that takes on a different appearance in every season.

Spectacular rock formations host dinosaur footprints and an old hydrotherapy pool.

This state-of-the-art planetarium takes architectural inspiration from the sun itself.

Carved into living stone, a beloved roadside chapel peacefully welcomes the faithful and curious alike.

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

A giant chameleon, with a fascinating purpose.

A precursor to Taro Okamoto’s iconic Tower of the Sun.

Established in 1937, the oldest candy shop in New York City boasts a rainbow-colored inventory that would make Willy Wonka envious.

Small caves once used as a hiding place for some of those accused during the Salem Witch Trials.

A cheeky name for an observatory visitor's center.

A settlement that was stopped in the middle of construction, leaving behind paved roads, curbs, light poles, a stormwater drainage system, and even a basketball court, but no houses.

A dilapidated space station with overtones of 'Alien' and 'Bladerunner' featuring a multiplayer games galore.

Believed to be the largest Japanese garden in the world outside of Japan.

For a few short weeks in spring, this hiking path becomes a daffodil paradise.

A scene of a heinous act during a troubled period of Scottish history.

This sculpture encompasses the emotion of rail travel.

From grand battles to daily life, this Spanish museum offers a view of world history in miniature.

One of Ireland's lesser-known megalithic structures.

This house covered in small stones was the work of one man over the course of nearly 30 years.