Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A restaurant devoted to "trouser grip" wrestling, an ancient form of Viking wrestling that is Iceland's national sport.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

The storied steakhouse is the last in a long line of Lebanese-owned supper clubs in Tulsa.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A clear blue swimming hole with hidden caves, still unexplored.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

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

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Plaques on its facade commemorate the Tiber's most destructive deluges.

An 18th-century post box used to alert the church of sick and ailing foreign pilgrims.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

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

Go inside to really appreciate this 500-year-old technological masterpiece.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.