The island residents are known for taking their quirky sense of humor with them to the grave.

A permanent outdoor art installation made up of more than 100 mushroom-shaped lights.

Colorful murals stationed throughout Charlotte bring poetry to everyone.

Conjoined twins Daisy and Violet Hilton were stars of the vaudeville circuit.

A psychological self-portrait in the form of a giant, segmented head.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Hunt for buried treasure in Nova Scotia.

It was once the base for a series of domestic terror attacks.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

An 18th-century townhouse that once hosted guests of the president.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

Coins and medals straight from the mint await visitors to this shop in the nation's capital.

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.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

Disks are rolled out onto the south lawn to absorb the impact of Marine One's wheels like giant coffee coasters.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

This grisly headstone doesn’t seem to be resting in peace.

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

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

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

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

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

A building shaped like the Army Corps of Engineers logo, because why not?

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