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

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

"The House That Love Built" is shying away from "The House That Ghosts Love."

Only known mainland rookery of the threatened Stellar sea lion.

One of the last free public hot springs is decorated with hippie art.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

100-year-old shipwreck you can walk up to at low tide.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

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

The first park built over a freeway is a brutalist masterwork.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

A derelict bit of transportation infrastructure hidden in the woods.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Hundreds of trees made from glass bottles make up this forest on Route 66.

Acres of natural wonders left behind by a socialite-turned-gardener.

Even Henry David Thoreau found this glacial pothole irresistible.

This private residence was the template for one of the most beloved television homes of all time.