One of the oldest living oak trees in the Southeast.

Don't be surprised if you see a long-necked dinosaur peeking out from among the trees in Northgate Park.

This research center for rare prosimians is studying how they sleep to help prolong human life.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This historic, one-acre island is the only legal place to camp in the city of Richmond.

These trees are living witnesses to events that inspired poet Walt Whitman’s service during the American Civil War.

This historic patch of real estate offers a glimpse of colonial Boston.

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

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A giant toy jack made of numerous welded-together fire hydrants.

A massive sustainable farm designed by the mastermind behind Central Park.

Lake Champlain Bridge, the recently demolished and rebuilt bridge where they filmed "What Lies Beneath".

Dine like an American revolutionary at Colonial Williamsburg.

Concrete strongholds stand guard over the Golden Gate.

A living time capsule of the 1960s Richardson Bay water-front.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

An enchanting tunnel of cypress trees leads to an old morse code station still used today.

One woman's Viking Castle on Lake Tahoe.

The California capital city once stood 10 feet lower than it does today.