The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Every St. Andrews student knows to avoid this inscription for fear of a martyr's curse.

A strange mishmash of ruins and abandoned structures hint at the park's many lives.

An out-of-the-way wildlife haven with a rich and storied past of harboring thousands of fugitive slaves, or "Maroons" during the mid 1800s.

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

Unlike most arches, this geological oddity formed in a volcanic dike.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.

A huge musical instrument played by the ocean.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Dedicated to preserving the history of free Black communities in Brooklyn and beyond.

Housed inside a replica church, its collection honors the Black community displaced by the Halifax government.

This whimsical fountain pays tribute to Toronto's four-legged friends.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.