A unique subway station where pillars evoke ancient civilizations.

This beautifully situated lakeside Roman settlement was likely built during the reign of the Emperor Hadrian.

A rare venue to buy specialty maps.

This unusual structure may be on its way to becoming a cultural landmark in Toronto.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

Legend says this rock spire is the finger of a witch who wanted to throw the Faroe Islands towards Iceland.

The narrow passages will challenge even the bravest driver.

Located more than 600 feet beneath sea level, this tunnel boasts the world's first undersea roundabout.

This mysterious, medieval cathedral remains unbuilt but fiercely protected.

A former Canadian Pacific Railway station turned liquor store, the first and only station in Canada visited by British royalty.

This whimsical fountain pays tribute to Toronto's four-legged friends.

This Toronto garden collects stares and tchotchkes in equal measure.

Known as "Toronto's Flatiron."

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

The red letters in the literary pavement leading to the library form a mysterious code.

A sweet symbol marks the place where torturous executions were once carried out.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

What was once England's second-richest abbey is now a haunting ruin.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

This network of narrow, medieval passages has the most delightful name.

This one has sailed five times as far as Sir Francis Drake's famous ship.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.