The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

This striking, two-toned confluence of rivers is visible from space.

This picturesque island graveyard is the final resting place of dozens of notorious pirates.

See hundreds of herons and egrets in the heart of the city in this dreamy hidden park.

Now home to nothing but a weather station and a landing strip, a group of enslaved people were marooned on this tiny island for 15 years.

The “Thumb” of Mauritius provides a 360 degree view of the entire country.

This small group of sand dunes manages to pack in a strange rainbow of colors.

Réunion Island's highest point is a 2 million-year-old volcano and a paraglider's paradise.

A black and white painted wall creates an optical illusion in the California desert.

Catch a glimpse of local, native wildlife at this zoo dedicated to conservation and education.

This tiny patch of arid sand sits in one of the greenest states in the United States.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

A heavenly experience, right here on Terra Firma.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

Hollowed out cedar log tubs set in an ancient towering forest.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

1920's mining camp and environmental education center is serving to protect the surrounding forest, one of the last of its kind in the Pacific Northwest.

Unknown to many, this sparkling turquoise lake hides amid Oregon's snowcapped mountains.

This frequently-photographed waterfall takes only a short hike to visit.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.