A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

The U.S. Army's giant warehouse of war art includes Hitler’s watercolors and Norman Rockwell oil paintings.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

Elvis's own personal tropical hideaway.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

This university research project is the U.S. government's weed dealer.

Holding the most bodies of any cemetery in the United States.

Become a prohibition rebel.

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

Skewer up Kangaroo.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

Plot your trip through the city on the sidewalk.

The saddest little diner in New York.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

A veritable variety of odds and ends.

These ornate manhole covers were used for a now-forgotten purpose.

A hidden "place of interment for gentlemen."

Offbeat arts organization that hosts exhibitions, events, and explorations.

These historic buildings once housed the headquarters of one of the most infamous gangs of New York.

Known as the "Forgotten City" it was home to industry, riots, artists, squatters, and to one of the largest single disaster fires in New York City.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.