This historic mansion was built as a symbol of love between a husband and wife.

A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

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

Exact replica of the ancient monument, but much, much lighter.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

A statue of the English poet for whom this Delaware town is named is ritually dressed in seasonally appropriate clothing.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

The historic home still shows the scars from a little run-in with the British in 1813.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

A historic cemetery filled with quirky faux wood art and unique tombstones.

This historic lighthouse was well known for the large number of women who served as its keeper.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.