The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

This exquisite example of early colonial architecture remains unfinished almost 500 years after construction began.

The ruins of the second of three churches dedicated to the saint in a touristic Scottish town.

This Mexico City subway station will make you feel like you've been transported to the London Underground.

Half-hidden by grassy slopes, this striking Spanish colonial fort is now a museum of underwater archaeology.

Trek through the jungle on a boat and a swinging bridge and you'll be rewarded with these refreshing, if pungent, mineral pools.

This modernist church's massive sci-fi dome may be one of Latin America's largest.

The ruins of a 15th-century church once home to priests who prayed for a single family's salvation.

After a partial collapse in the 1950s, this small church's historic facade lives on.

This colonial mining complex is now home to magnificent themed gardens.

A fairytale-like grove with a crystal-clear spring bubbling under the shade of a massive ancient tree.

This repurposed church offers a more literal way to get closer to the heavens.

This Oaxacan town is known for its colorful fantastical creatures hand-carved by local artisans.

Its incredible collections are dedicated to preserving Mexico's film history.

The last remaining bottle-shaped kilns in Scotland stand alone in an Edinburgh suburb.

The collection of intricate sculptures includes one carved from a mammoth's tusk

It's a mystery how these curious columns wound up in an Edinburgh suburb.

This series of waterfalls tumble into a radiantly blue river.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Overlooking the burial ground is a tower designed to prevent thieves from snatching the recently deceased.

Cartoon clouds and nature-inspired murals have transformed the streets of Kuala Lumpur.

This grand yet little-visited tomb seems almost carved into the hill it sits on.

A wooden sculpture sits rather out of place in this Mexican beach town.

This 19th-century sanctuary was built atop a hill that once housed a Roman fort.