Minimalist modern art on a repurposed military base in rural Texas.

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

The United States Capitol's former columns still stand.

The development and impact of electronic media showcased in a picturesque farmhouse in Maryland.

A museum dedicated to exhibiting remarkable outsider art.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

A layered tribute to the work of mosaicist Isaiah Zagar.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

Futuristic apartment blocks are the backdrop for Montreal surfers hangin' ten on the Habitat '67 standing wave.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

The world's only and thus largest collection of its kind celebrates everyday wonder through simple umbrella sheaths.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Mansion and shopping center used in the 1975 film "The Stepford Wives."

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

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

Art deco landmark on the outskirts of Washington, D.C.

At 207 feet, one of the world's longest continuous escalators.

Largest Roman Catholic church in North America.

The site of the climactic scene from the classic horror film is now a historic landmark.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

The "lovely red Vega" of the legendary record-settling pilot.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.