Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

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

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

The most loyal of little dogs, or a Victorian era publicity stunt?

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

This massive statue is the personification of Bavaria and the first colossal statue of the modern period composed of bronze.

The Jelgava Palace holds one of the few burial places of governor’s dynasties that is open to the public.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

This set of concrete chambers resonates according to different notes of octaves.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

A Gothic cathedral created from volcanic rocks.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

This abandoned church in central Lyon is missing its front stairs.

Hundreds of hidden passageways weave through the old quarters of Lyon.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.

With over 10,000 lights, this engineering marvel lights up the city after dark.