Scattered throughout London are ancient remnants of the city's former bounding wall.

This Transylvania County city is home to a rare white squirrel population that is descended from an escaped carnival animal.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

60 feet of towering steel balances gracefully.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

Follow the steps, and this roadside artwork will teach you how to dance.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

An overgrown collection of miniature buildings still stand as evidence of one couple's obsession with The King.

A layered tribute to the work of mosaicist Isaiah Zagar.

The first American department store, and home to the largest operating musical instrument in the world.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Elevated freight railway turned wildly successful urban park.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

The record holder for the world’s largest peach.

An idyllic mineral hot springs facility with a more-than checkered past.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

A wedding chapel, vintage clothing shop, and bar all under one roof.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

The secret city built by the Manhattan Project.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.