Rippling sand dunes frozen in the Arizona rock.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A massive volcanic plug is now a protected area that hosts a number of bird species.

A New England-style lighthouse along California's beautiful Highway 1 gets a re-do.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

The White House Situation Room was taken apart in 2006 and shipped to the Ronald Reagan Presidential Library.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

Quite simply the largest tree in the world (by volume).

A 19th-century cabin built into a hollowed-out Sequoia tree.

Four hundred granite steps were built into this massive rock by the National Park Service.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

San Francisco's newly reopened hands-on science museum.

The ghostly remains of what was once the world's richest copper mine.

The king of U.S. high points towers over every other peak on the continent.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

The collection of signage remembers the midcentury pushback against the new neon light.

This historic Victorian hotel has a scandalous history of affairs and murder.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

The colonial city's social history is reflected in its fanciful door knockers.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.