Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Former villa and estate of James Deering developed to preserve native tropical forests.

The oldest inn in England served brew to the crusaders.

Europe's largest prehistoric mound – burial site of a legendary king?

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A six-ton wedding present for the King of the Scots.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

This lighthouse was witness to the end of WWII hostilities and now collects creepy cairns.

A 60-room castle constructed by a horse-racing heir.

Two thousand artifacts from around the world collected by one woman who loved to travel.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

City Council meetings still happen in this historic building, impeccably preserved on the inside.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Concrete strongholds stand guard over the Golden Gate.

Only hotel where you can legally launder money.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The former Naval shipyard is open for exploring - mostly.

A man-made island in scenic San Francisco Bay.