A normal, unassuming pedestrian overpass has been the demise of many, many trucks.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

The colonial home of Paul Revere during the American Revolution.

This edible park is open to any and all foragers.

This historic bridge connects Whidbey Island to Fidalgo Island across whirlpool-filled waters.

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

Cave carved out of a huge snow drift collapsed killing one and injuring five in July 2015.

This Las Vegas casino boasts one of only three spiral escalators in the United States—an engineering wonder.

Standing 191 feet tall and measuring more than 55 feet in circumference, this is the world's tallest spruce tree.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

Founded in 1961, this comic shop is said to be the oldest in the world.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

Interactive museum complete with costumed re-enactors and the only known surviving chest from the Boston Tea Party.

A memorial to the most decisive Native American victory of the Plains Indian War.

This historic building provides a powerful glimpse into the lives of Japanese Americans forced to relocate during World War II.

Its 27 graveyards represent the many nationalities and ethnic groups that voyaged to this wilderness in the late 19th century.

This quiet neighborhood is also home to a 700-ton rock transported by the last Ice Age.

This gold-winged spire celebrates the first true flight around the world.

A hidden gem full of oddities, curiosities and macabre antiques.

A colorful statue honoring the local salmon in glass and bronze.

This Cold War siren is one off the last of its kind still standing with its immensely powerful original horn.

More than 700 species live within this murky marvel of a swamp on California's coast.

Site of a tragedy on the Oregon Trail.

This small hill features the most notable collection of petroglyphs in Saguaro National Park.