The first American home of the isolated, egalitarian religion has a trove of Shaker architecture and artifacts.

This giant monument of the RCA mascot is a beloved fixture in Albany, New York.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

This grand gothic brewery has been pumping out suds for over a hundred years.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

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

Look closely and you’ll notice that the color changes a third of the way up the tower.

When it comes to handsignals (and colonialism) rock always beats scissors.

A diminutive memorial marks the site of a successful assassination by a right-wing death squad in America's capital.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

The walls of the iconic dome are hollow and have a secret stairway.

The span is crooked and made from two older recycled bridges.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Dr Barnes' $25 billion private collection of art and arboretum.

A massive Montreal stadium that has seen nothing but trouble since its inception.

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.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Hear the quietest sound from across the dome.

Elevated freight railway turned wildly successful urban park.