Pilgrimage site for star-crossed lovers.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

These elaborate gothic monuments honor Verona's medieval lords.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

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.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

The prototype for all Nazi concentration camps.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

A set of seven houses, each built in a style that represents a European country.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

Most prolific publishing house in the 1600s open to the public.