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

The yawning maw of this pagan visage is said to bite off the hands of liars.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Follow the original medieval paths that wind through this intriguing section of the city.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

A public urinal so pretty, it was declared a national monument.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

The attic of a four-century-old canal house hides a clandestine church.

A floating cat sanctuary on an Amsterdam canal.

This Transylvanian church has changed its denomination four times.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

A countryside Romanian cemetery filled with colorful crosses bearing lyrical, ironic, or satirical rhymes.

This Portuguese bullring is built right into the caldera of an island volcano.

As the highest point in the Mid-Atlantic range this stratovolcano offers spectacular views.

Pagan monument converted to Christianity with the population.

A majestic hotel for dreamers rises from the center of a fairytale wood.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.