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

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

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

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

More than 5,000 contemporary and "historic" mustards from around the world.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

Wisconsin's most celebrated export gets the royal treatment on I-94.

This cave holds a surprisingly colorful variety of geological oddities.

A bizarre house filled with an astounding array of collections.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

Look closely and you’ll notice that the color changes a third of the way up the tower.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

The "lovely red Vega" of the legendary record-settling pilot.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

A celebrity from the late Cretaceous period.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

An entire city block built completely out of petrified wood.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

A roadside collection of over-sized iron creations that are a bit more macabre than most.