A former major munitions plant that has been converted into a sprawling art space.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

An original apothecary from 1792.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

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

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

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

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

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

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.

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

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

Decades before the scandal, this staircase on the river was a literal "water gate."

Largest Roman Catholic church in North America.

The walls of the iconic dome are hollow and have a secret stairway.

Home to items never before seen by the public.

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

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

This landmark cemetery in Boston was created more than 300 years ago.

The site of Paul Revere's historic two lantern warning.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

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