"The prettiest love letters in the world" ... or so said Lord Byron.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

See what remains of a once grand ancient Roman circus.

A small sculpture that pays homage to the famous bronze ear of Ca de l'Oreggia—or does it?

The mark of the Devil's horns on a marble column in Milan.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Third time's a charm, or in this case, two testicles are.

Visit the grave of a famous feminist author and the mother of Mary Shelley.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

A small museum that celebrates the history and culture of the LGBTQ community in England.

These 19th-century gas tanks were remade into an apartment complex.

This 1920s Dutch barge is now a floating bookstore.

A medieval emblem located in the middle of a racetrack.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Take in the views of Big Ben with a Guinness in hand at this floating pub aboard a 1930s Dutch barge.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The interior of this church has been turned into a memorial to locals who died in Croatia's Homeland War.

The local club's soccer field is practically surrounded by UNESCO-protected monuments.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

This ancient Roman aqueduct once funneled water to Diocletian's palace.

One of the very few mosques built by the Ottomans still standing in Croatia is now a Catholic church.