This free, take-a-book shop seems like a trick but isn't.

Hidden behind a gate in Greenwich Village is a little farmhouse that once served as the writing studio of a bestselling author.

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

This lighthouse was crafted as penitence for the theft of wine bound for a monastery.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The southernmost outpost of the Russian Empire in colonial America.

A remarkably well preserved tower dating all the way back to the Iron Age.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

One of the most controversial statues in Romania is an emperor with no clothes.

Flames have been burning within this mountain for more than 2,500 years.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

All of Chicago's wood-paved streets are long gone but two alleys remain.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

A hollow cement depiction of time's inexorable effect on the human body.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A Bibliophile's Dream.