Scattered around Atlanta are little doors with big charm.

An underground magnet for ever-changing street art.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

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

Death comes to anyone who dares to touch this concrete column.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

A winding district gerrymandered into the shape of a mantis.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This free, take-a-book shop seems like a trick but isn't.

A museum dedicated to exhibiting remarkable outsider art.

Walk through the history of American pop culture.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

Once America's tallest structure, now a Baltimore landmark.

A hidden alley in urban Baltimore is a haven for graffiti artists.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.