This coastal rock formation resembles a churning cauldron at high tide.

Contractors in this Oregon town have been stamping their names in sidewalks since 1908.

This 85-foot-long table is made from a single slice of an old-growth Douglas Fir.

A brief journey through early 19th-century pioneer life across Linn County.

A circular two-story museum built completely by hand with 800 tons of rock.

Where else would you expect to find the gravesite of European royalty than the windswept dunes of rural Northern Michigan?

A lonely stone-sided terminal stands next to a grass airstrip on Michigan's Leelanau Peninsula.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

This mid-19th-century dugout was once home to a Swedish family as they erected their homestead.

A unique blue and yellow phone booth in America's "Little Sweden."

This historic early-20th-century building still boasts some of its original features.

Over 30 brightly painted Dala horses roam through ‘Little Sweden.’

The oldest house in Lindsborg, Kansas, includes some fascinating inscriptions.

A preserved relic of the 1904 St. Louis World's Fair and a center of Swedish American Culture.

This early pioneer landmark is one of the oldest buildings in this part of Kansas and one of the few Dutch mills ever built in the state.

This roadside prairie Statue of Liberty replica is one of the foremost examples of the Boy Scouts of America's "Strengthen the Arm of Liberty" campaign.

A small-town limestone memorial to a local cartoonist and to Porky Pig, his most famous subject.

This lesser-known geographic marker was the reference point for all surveys of the continent for 75 years.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Enjoy a tour of oddities and makeshift monsters at this souvenir store with an offbeat sense of humor.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

This hand-carved wooden carousel in the Story City North Park was built in 1913.