What is the Thing?

A spiritual vortex among the red rocks in Sedona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A sharp bend in a dramatic river canyon cut through red rocks.

The blinking light atop the iconic landmark has been sending secret messages for decades.

A herd of colorfully painted bovine statues can be found in the middle of "cowtown."

A controversial blue hoop has been puzzling freeway drivers since 2013.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

A lush green oasis in the middle of Chicago.

Salina's eye-catching giant mural depicting children at play is painted atop a century-old mill elevator.

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

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

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

Built for an exposition in 1915, these horticultural displays have stood the test of time.

An ode to the friendship between four Pacific Rim countries.

One of the largest trees of its kind in California.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.