Stockholm's narrowest alley is barely over two feet wide.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

The Guardian of Tallinn.

A medieval setting reimagined into a unique art alley.

Spend your honeymoon where the Devil had his wedding.

The oldest continuously operating pharmacy in Europe.

Only a fragment of this 15th-century Dance of Death survives today.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

"There's nothing there," and other lies the KGB told us.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Copenhagen's celebrated theme park and gardens.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

A bit of retro transportation flair preserved in the world's largest department store.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Elevated freight railway turned wildly successful urban park.

During the renovation of this bas-relief, the constructors added one unusual element.

An inconspicuous footbridge beloved by San Diego locals.

A blast from the past in central San Diego.

A cult following celebrates the legend that belies this curious podiatrists' office sign which has worked its way into song, literature, animation, and the visual arts.