The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

Home to the deepest rift anywhere on Earth.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This Spokane mansion and the stories within its walls have been brought back to life, thanks to careful restoration.

The former home of the "Mother of Father's Day."

The decorations were inspired by an unlikely missing treasure.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

Protected from the elements, these Native American rock paintings have survived approximately 250 years.

A giant milk bottle from the 1930s beckons drivers to this diner.

This playground sculpture of an icon from the past is dedicated to the children of the future.

This large artificial waterfall in Washington state was merely an incidental byproduct of a technological megaproject.

Every drop of water in this 27-mile long reservoir was pumped up from the Columbia River using power from Grand Coulee Dam.

Site of the greatest known waterfall that ever existed.

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

This metallic stampede sits frozen on a Washington ridge yet the artist's vision is still incomplete.

The longest spit in the United States ends at a lighthouse in the Strait of Juan de Fuca.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

The highest point in Washington state is a volcano covered in glaciers.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

A rare tour of a commercial jet assembly plant, held inside one of the largest buildings in the world.

A wall of chewing gum moonlights as collective art.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.