This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Tour the sci-fi-esque reality of governmental disease management.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

After just one epic test blast, this literal loose cannon proved too explosive for combat.

A white oak with property rights.

Secret gardens just a few miles from downtown Atlanta.

Developers built a Walmart around one family's plot and constructed a mausoleum in the parking lot.

Bad farming practices caused this unnatural natural wonder.

This stone is a marker of one millionaire's personal vendetta against gravity.

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

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

Soaring over the Niagara Whirlpool since 1916.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

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

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Discover the taste of mold.

One of only two commuter aerial tramways in the United States.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.