A Jenga-style cylindrical tower of books that appears to go on forever.

Macabre astrological automaton clock dating to the late 1400s.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

An ancient octagonal weather station named for the eight Greek gods of wind.

Perhaps the world's only gas station inspired by a political scandal.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A pair of club-wielding guardians stand watch over London's first public clock to feature a minute hand.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

Odd outsider art installations surround a Gold Rush-era ghost town.

The abandoned remnants of a little sanctuary for world peace that fell into disrepair.

This unattributed sculpture in Amsterdam is hiding in plain sight.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

This 18th-century sundial was designed to calculate the date of Easter each year.

Ozymandias’ time-keeping temple.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

The world's largest egg has been cracked a number of times over the years but has been repeatedly replaced.

A 17-acre urban oasis featuring a pollinator garden, heritage trees, and an aerial tree walk.

This theatre and its amazing marquee harken back to the Golden Age of Hollywood.

A beautiful 62-acre Catholic shrine and botanical garden.