Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

10,000 flowered plants bloom in the City of Roses.

The seamy, underground secrets of Portland's criminal past.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

Oldest unrestored plantation house in America that is open to the public.

A (slightly) grownup take on the classic retro arcade.

An ice cream parlor chain that caters to vegans and pinball fans equally.

This parking garage has given itself over to graffiti artists and the neighborhood can't thank them enough.

This century-old confectioner's outlet store was plucked right out of the Seattle World's Fair.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

For decades, it has disappeared and reappeared as water levels rise and fall.

Locals call this magical moss-covered walkway the "Emerald Path."

A field of nothing but boulders which resembles a giant's gravel driveway.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

The abandoned coal loading dock is a canvas for unsanctioned art.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

The oldest farmer's market in America is so ancient it was approved by the King of England.

Dr Barnes' $25 billion private collection of art and arboretum.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

The graffitied ruins stand hidden within the Pennsylvania woods.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

This church in Pittsburgh is home to the largest collection of religious relics in North America.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.