Inside this church are the alleged remains of the patron saint of lovers, epileptics, and beekeepers.

A vault of safe-deposit boxes in an old bank has been repurposed as a time capsule of Hispanic culture.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

An ancient Egyptian temple in the middle of Madrid, Spain.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

This one has sailed five times as far as Sir Francis Drake's famous ship.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The remains of Crystal Palace Great Exhibition of 1851.

An unusual round church in London with a Templar past.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

This historic cemetery was inaccessible for several years due to dozens of land mines.

Oriental bazaar in the heart of Sarajevo.

This 135-year-old weather station studied the effects of the climate on human health.

An ancient knight and a symbol of the city's freedom.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

An autonomous republic of Orthodox monks.