The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

A common entry point to the Griffith Observatory trail holds its own wonders.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Detailed facade of a brownstone in Boerum Hill.

If New Orleans is the birthplace of the "cocktail," why does their own museum of cocktail memorabilia beg to differ?

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

This bridge is haunted by the ghost of a distraught mother.

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

A wunderkammer hidden on the top floor of the Hartford statehouse.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

An underground magnet for ever-changing street art.

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

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

The abandoned personal amusement park of the King of Pop.

Ruins of a Carnegie family mansion on Cumberland Island.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.