A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.

The celebrated eyesore created by starry-eyed sweethearts.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

A surrealist timepiece by the artist of melting clocks.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

These sculptures were created by a 17th-century artist who had never seen an elephant.

This small church was constructed over the ruins of three temples dating to the Roman Republic.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

This unusual lava tube spouts seawater during high surf.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

This giant fashion model is one of the most beloved symbols of Nagoya.

This ancient market is often referred to as the oldest shopping mall in the world.

This is the oldest Roman-made bridge in the city still existing in its original state.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

A cheeky reminder about the value of art dangles above one of Olomouc's busiest streets.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

Is this cat asleep or just pretending?