At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

This now-abandoned part of the original transcontinental railroad route provides a surreal driving and historical experience.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

A forensic lab dedicated to fighting crimes against wildlife.

Journey through a bit of nostalgia inside this classic record and video store.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

The longest navigable underground river in the United States is home to countless blind and albino animals.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

Moss and stone turn this waterfall into an otherworldly liquid veil.

Stones speckled along Harris Avenue reveal hidden nuggets of the past.

The illuminated falls are a gem in North Cascades National Park.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

Four abandoned towers hidden above the Douglas fir forest in Washington.

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

Play everything you see at a museum dedicated to a town's historic organ industry.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

This 50-ton ship on Orcas Island has never seen the ocean.

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

Featuring a casually threatening atmosphere along with dessert and coffee to die for.