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

Stroll through a wonderland of stupendous moss-covered trees.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

A giant Troll lurks under one of Seattle's oldest bridges.

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

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

The spectacular collection of one of the world's best woodcarvers.

This magnificent Cincinnati graveyard is also a popular public park.

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

Medical history museum featuring a lovely doctor's office from the 1800s.

Feral cats keeping the rodent population at bay all across Greenpoint waterfront.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

A perfect replica of the beloved show's first set.

Each step is a mere four inches tall, said to be measured by the stride of a woman wearing a hobble skirt.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

Some islands... they come, they go, especially on Lake Travis.

The highest point in Texas is capped by a big silver pyramid.

The Vermont square that inspired Shirley Jackson's "The Lottery."

This historic folk museum celebrates the attention to detail that makes America great.

The building that inspired Shirley Jackson's "The Haunting of Hill House."

Take an otherworldly journey in a school dedicated to out-of-body experiences.

At 207 feet, one of the world's longest continuous escalators.

The highest point in Virginia can only be reached by passing through ponies and flowers.

Piano-making empire filled with 200-year-old steam machines still churning out 1,000 instruments a year.