Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

A huge enchanting public park just outside the ancient walls of Rome.

A collection of objects supposedly singed by the hands of souls in purgatory.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

A small cell adjacent to this church was once the bedroom for a renowned saint.

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.

The mystic whose incorrupt corpse still attracts the faithful.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

This fiberglass version of the Awakening sculpture by Seward Johnson, now resides in its third location in Italy, in Viterbo.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

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

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.

Pilgrimage site for star-crossed lovers.

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

A sinkhole known simply as "The Hole."

Uninhabited islet in the Caribbean is the sanctuary of giant lizards.

This is Britain's one and only clock concealed in the pavement.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Of all the origin stories for weed's secret code, this one likely has the goods.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.