A wondrous old library overlooking the nation's capital.

A historic neighborhood church is reborn as a psychedelic arts collective.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

This grand gothic brewery has been pumping out suds for over a hundred years.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Home to items never before seen by the public.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The site of the climactic scene from the classic horror film is now a historic landmark.

The United States Capitol's former columns still stand.

The legacies of two historic Black American institutions live on in this unassuming brick building.

One-of-a-kind museum inside the first Boeing 747-400 ever made.

An ornate Buddhist temple located in an Atlanta suburb, built by and for the Laotian community.

This "living building" on Georgia Tech's campus is home to a blueberry orchard, honeybees, and more than 900 solar panels.

A fascinating aviation museum where you can chat with the veterans who once flew the aircraft on display.

A vast collection of rare, historical, and vintage supercomputers.

After just one epic test blast, this literal loose cannon proved too explosive for combat.

The small first-floor apartment where the author wrote her Pulitzer Prize-winning book 'Gone with the Wind.'

This protected reserve is home to a rare and beautiful species of flower.

A hidden oasis just two minutes from downtown Atlanta.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

The house that Southern rock built now stands as a monument to one of the genre's favorite families.

HFH's slum simulation is either a noble recreation of poverty or a cringeworthy attempt at same.