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

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

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

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A private museum dedicated to preserving the heritage of Mardi Gras' most beloved underdog parades, open by appointment.

A little piece of Paris in the sultry south of the U.S.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

One of the now-less-hidden floral gems of the "Emerald Necklace."

This small-town Connecticut restaurant gives each diner a free book from its vast library.

The bartenders at this crime-fighting theme cafe are actual private detectives by day.

Check out the underground party scene at the "Burning Man of Brooklyn."

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

Volunteer-run library dedicated to exploring five decades of activism history.

Detailed facade of a brownstone in Boerum Hill.

Unique antiquarian shop specializing in globes, maps, and prints.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

Abandoned power station once home to a squatter community, now being developed into an arts center.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.