Visit the monolithic tomb of America's most famous general.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

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

Headquarters of the world's fourth largest Hasidic sect and the first of many "770s" around the world.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

On the Hudson resides one of the largest clocks in the world.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

Memorializing an American tragedy of massive proportions.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

There aren't too many operational funiculars around, but Pittsburgh has two!

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

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

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

Jule Körner's house full of bizarre architectural details.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

The world's largest fully steerable radio telescope.