Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The trials and tribulations of marking Poe's grave.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

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

Washington D.C.'s most famous pianist, composer, and bandleader still tickles the ivories outside Howard Theater.

A striking memorial to the 21 lives lost in an explosion at the Washington Arsenal

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

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

D.C. once had its own tiny rival to the New York Stock Exchange.

A line of blue paint marks the route of the inaugural parade.

Through the decades, Black music stars have performed at this historic hub for music and the arts.

The 28,000-year-old specimen is remarkably intact.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Also known as the Founding Church of Scientology.

An overlooked memorial honoring the local Washington residents who died in World War I.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

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

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

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

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

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.