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

A former major munitions plant that has been converted into a sprawling art space.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

The most accurate timepiece in the world.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

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.

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

A downtown park built on top of unclaimed graves.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

This museum offers an actual time machine back through Colorado's past.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

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

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

Commemorating the spot where the famous scientist fed his pigeons.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A semi-scholarly approach to sex.