The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Ruins from the Parthenon and petrified wood line the interior of one of the world's most famous monuments.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

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

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

The final residence of an educator, civil rights leader, and presidential advisor was also the first headquarters of the National Council of Negro Women.

For over 70 years, this house was home to a pioneering Black artist and educator.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

This small memorial is almost as well concealed as Smalls himself was on the night he sailed to freedom.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

Paths are maintained, but trees have taken over plots.

Tour the oldest unrestored plantation house in America that is open to the public.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

This kitschy tavern is also home to rare early editions of "Treasure Island."

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

This impeccably preserved farmstead is a time capsule of a Pulitzer Prize-winning novelist's life.

Over 12,500 words are scrawled across each room of this historic plantation house and no one knows why.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

This phone booth-sized municipal building has been a piece of police property for more than half a century.

The bottle house obsession struck a Florida man in his retirement, and now he can't stop building.

This Florida museum dedicated to western artwork is entered through an artificial canyon with imported sandstone.

A creative deviation in this post office's design was once a source of controversy.