The only working large-scale tea plantation in the United States.

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

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

A quirky Poe-themed joint on an island keen to celebrate its overlooked connection to the famous writer.

The final resting place of the Seminole Indian chief who fought against government occupation in Florida.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

This New Orleans boutique and nursery specializes in rare flora, with a focus on carnivorous plants.

A calm and comfortable place to hang out with cats and kittens up for adoption.

This unassuming passageway played a key role in one of the most important events in U.S. history.

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

A historic arena where the Beatles played their first concert in the U.S.

Washington's top-secret Cold War-era doomsday communications tower is located in a small neighborhood park.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

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

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.

In the basement of the U.S. Capitol Building is a hidden storage room full of ornate floor tiles leftover from the 1850s.

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

A clone of a cloned tree that was so important it allegedly had its own guards.

The most accurate timepiece in the world.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.