North Dakota

Home of a large and unusual defense antenna, part of the Perimeter Acquisition Radar Characterization System (PARCS), used to identify and calculate the trajectory, and thus the impact point, of incoming missiles. This information is relayed to the...

Relying on natural decontamination processes instead of chemical agents, Viet Ngo's "Lemna System" utilizes a variety of floating plants to remove harmful phosphorus, nitrogen and algae in water before it is released into a bay of Devil's Lake. Shaped in the...

Holds back Lake Sakakawea, the third largest man-made lake in the country, and one of several major lakes made by dams along the Missouri River.

A nice obelisk marks the spot.

A bomber and refueling base, and former Minuteman missile support base with over 5,000 acres, and around 5,500 employees. The missile functions were transferred to Malmstom AFB, Montana, in the late 1990's. As of May 2011, RQ-4 Global Hawk unmanned aerial...

One of only two B-52 bomber bases in the country, and a base for the operation of the surrounding ICBM missile field. There are 5,000 acres, and 5,600 workers at the base. The Minuteman III missile field covers 8,000 square miles of mostly public land with...

At 2,063 feet tall, this cable-stayed television transmitter tower is the tallest man-made structure in the United States, and the third tallest structure in the world. A radio mast in Poland is 2,120 feet tall, but lost its top portion in an accident during...