The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

See massive fossils that are over 200 million years old in northeastern Arizona.

No two pieces are exactly the same at Portland's hippo-themed hardware store.

The magic's in the hole!

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Few other hotels can rival the grandeur of the Castle in the Rockies.

Profile of a sleeping person 4km long in 250m high cliffs.

This expansive bridge in the Canadian wilderness was originally just built for friends.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

A famous hotel houses an impression collection of mini dioramas and giant doll houses.

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

One of the indelible moments of the American Revolution took place at this location.

Historic Hull Street was actually the first street with a proper name in the Boston area.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A mysterious stone embedded at the base of a historic Boston building.

This landmark cemetery in Boston was created more than 300 years ago.

The site of Paul Revere's historic two lantern warning.