Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

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

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

During World War II this was the site of an "honor camp" used as a prison for draft dodgers, Native American conscientious objectors, and Japanese-Americans—including a man who brought his case against the camp to the Supreme Court.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A hotel with a rich Wild West history of miners and bootleggers.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

You may recognize this beautiful grove within Kaitoke Regional Park as location of the house of Elrond.

Visitors to this public park will also find the ruins of an old western fort.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

The home of famed war correspondent Ernie Pyle is now a library and museum dedicated to his memory.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

These 90-year-old murals of local kings, Vikings, and outlaws hide in plain sight in a beautifully baroque shopping arcade.