A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

Denmark’s never-ending bridge.

The final home of the legendary Danish sailor said to have lived to be 146 years old.

A public display of random paleontology.

A symbol for the opposition to nuclear power around the world.

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

Not far from the more famous House of Juliet, visitors will find the supposed residence of her lover.

These elaborate gothic monuments honor Verona's medieval lords.

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

Atop the former site of a historic bakery sit two stone tributes to Verona's contribution to traditional Italian baking.

A gorgeous example of 13th-century Gothic architecture.

One of the oldest libraries in the world is still operating and contains the oldest existing document in the Italian language.

It’s said this crypt was the setting for the tragic finale of the Shakespeare play.

This medieval castle was reconstructed by Carlo Scarpa.

This old medieval prison tower has been a site of astronomical research for more than 250 years.

One of the largest squares in Europe contains an entire artificial island.

The oldest botanical garden in the world that technically isn't the oldest.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."

In medieval times this small stone seat was used as a bizarre way to punish insolvent debtors.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

Hundreds of Roman amphorae are stored in an ususpecting underground parking lot.