This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

The site of Paul Revere's historic two lantern warning.

A 400-square foot model of historic Quebec is the playing field for a state of the art light and sound show.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Secret refuge and museum of the Duke of Florence.

Breathtaking and huge 430 year old maps of Italy.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

Go inside to really appreciate this 500-year-old technological masterpiece.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

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

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Don't worry, they don't use antique scissors.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

A museum wholly devoted to juvenescence.

This lush area was the site of extensive enemy bombing during WWII.

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.