Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

A rainbow-colored house promotes LGBTQ rights across the street from the Westboro Baptist Church.

Step back in time at this 1950s display home, built to showcase once cutting-edge electric amenities.

A unique attraction and museum dedicated to exploring iconic roadside structures.

This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

"...I guess that was your accomplice in the wood chipper?"

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

A Hawaiian stairway to heaven—that you can't climb.

This ancient Hawaiian henge may have been an early star chart.

This black shoreline is made up of exploded lava particles.

What remains of the summer palace of King Kamehameha III.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Watch the newest land on the planet form before your eyes.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

They sort through millions of dollars worth of diplomatic gifts on behalf of the government.

Washington's iconic carousel has a nice piece of Civil Rights history.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

A celebrity from the late Cretaceous period.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.