Sleepy Minneapolis block beats Guinness Record for most churches on one city block.

One of the world's premier laboratories for hydraulic engineering research takes full advantage of the water's power.

A palatial art deco restroom.

One of the coolest murals in Minneapolis.

Explore the History & Technology of Electronic Communication

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

A warehouse for all of your architectural details.

This 1960s kinetic artwork has been restored and is once again whirling away in downtown Minneapolis.

A Borgesian work of art that may blur the line between fiction and reality a little too convincingly.

The Real LegoLand.

A museum dedicated to the exploring past, present, and future innovations.

A whimsical sensor instrument for Minneapolitans to play on their walks to work.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

An architecturally-focused antique shop.

This lab's maddening silence is good for business but bad for sanity.

Opened in 1976, this monster-sized version of the fast-food franchise is sometimes called the Epic McD.

Loyal fans of one television's most famous painters still come to pay their respects.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Washington's top-secret Cold War-era doomsday communications tower is located in a small neighborhood park.

Amid the sprawling Defense Intelligence Agency Headquarters is one of Washington's least accessible museums.

The district's only illusionarium supports free writing programs for local students with every purchase.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

The most accurate timepiece in the world.