Ohio

Reactive Metals Incorporated (RMI) is a private company that processed uranium for reactors at the Department of Energy's Savannah River Site and the N-Reactor at Hanford, WA. Primarily formed fuel rods out of uranium billet supplied by the Fernald Feed Plant...

An industrial laboratory and office complex a few miles outside of downtown Columbus that is the main lab and headquarters for Battelle, a nonprofit R&D lab with over 7,500 employees at several locations. Battelle partners with companies to develop new...

An unusual and extremely large antenna consisting of a 500-foot-long flat array, built on the ground, and two vertical reflectors on either end. Built by Ohio State University, it became the first dedicated SETI (Search for Extra-Terrestrial Intelligence)...

The electric shovel that operated at this coal mine was the largest single-bucket excavating machine ever built, and one of the largest mobile earth-moving machines in the world. It used as much electricity as 27,500 homes to scoop out 325 tons of material in...

Campbell Hill is the highest point of land in Ohio, at 1,550 feet above sea level. Structures at the top of the hill are former defense radar facilities, left from the period of 1951 to 1969, when, due to its relative altitude, the site was used as part of...

American Electric Power, the nation's largest electrical utility, has bought the 200 or so lots that make up the small Ohio River town of Cheshire for $20 million, and is expected to tear down the buildings after they are vacated. The company, seeking more of...

The Cleveland Works steel plant is an assemblage of facilities along the Cuyahoga River south of Cleveland, known for years as LTV Steel. In 2002 LTV was bought by ISG, which was bought by Mittal Steel in 2005, and merged with Arcelor in 2006, to become...

The Davis-Besse Plant, outside Toledo, is one of two commercial nuclear power plants in Ohio (the other is the Perry plant, near Cleveland). Davis-Besse has been shut down for technical problems a few times since going on line in 1977. When it was shut down...

The 109 giant ears of corn on a lawn in an office park near the town of Dublin is a project conceived by the artist Malcolm Cochran, in 1994, for the Dublin Arts Council. It makes a statement about the transition of much of Ohio's landscape from farms to...

Around 60,000 tons of hazardous material, containing contaminants such as lead, mercury and arsenic, are burned in this incinerator on the Ohio River every year, making it one of the largest of its type in the world. It is operated by VonRoll America...

The only fully permitted commercial hazardous waste dump in Ohio is located across the river from Toledo, in the industrial and farming community of Oregon. The site consists of hundreds of acres of grass-covered mounds and waste-handling sheds. It is one of...

The Fernald Feed Material Production Center was the government's principal uranium processing facility, supplying material for the nuclear weapons program from 1951 to 1989. The site had nine plants within a heavily industrialized 136-acre complex, surrounded...

General Electric operates a multifaceted and remote field test station, 60 miles from Cincinnati, in the rural, rolling hills near the town of Peebles. The secretive 7,000 acre site has test stands and other support facilities for testing aircraft engines,...

Major aviation and aeronautics R&D complex, operated by NASA. Over 3,400 employees develop propulsion, power, and communications technologies for application to aeronautics and space. Started in 1941, as the Aircraft Engine Research Lab, the Glenn Center...

A dirigible hangar constructed in 1929. Once considered the largest airdock in the country, and at the time of its construction the largest building in the world without interior supports. It is1,175 feet long, 325 feet wide and 211 feet tall. The airship USS...

The museum which closed in 2009 due in part to declining attendance, was located in the company's headquarters, and provided information on rubber products and the history of rubber manufacture. Features of the museum included displays on the history of the...

A museum examining the history of transportation on the Great Lakes. It has some very nice models of ships, and boats, and a remarkable display of fresnel lenses from lighthouses. As the headquarters for the Great Lakes Historical Society, a large collection...

Longaberger is a privately-held, direct-sales marketing company specializing in baskets and traditional home accent accessories. The company's manufacturing and administrative facilities along Highway 16 in Newark and Dresden have been developed as a...

When it was built in 1886, at a cost then of $1.3 million, the Ohio State Reformatory (also known as the Mansfield Reformatory) was the largest reformatory in America. It evolved into a state penitentiary over time, and housed over 150,000 individual...

This site, one of hundreds of mound locations throughout the midwest, has been preserved and restored by the National Park Service, to represent what remains of the "Hopewell Culture" mounds, created during a few centuries around the time of Christ. The majority...

Owned by the Department of Energy and operated for many years by Monsanto and EG&G, the Mound Plant produced detonation devices for nuclear weapons and conducted research on nuclear fuels and isotope separation, starting in 1947. In 1993 the DOE decided...

Considered the largest military aviation museum in the world, the museum is located at one of the most important sites for aviation research and development in the world: Wright Patterson Air Force Base. Three large hangars and a missile silo built for the...

The National Road was America's first federal highway, stretching from Maryland to Illinois. It was completed in 1840, after 29 years of work, and sections of it still remain intact. The museum contains a 136-foot diorama, and life-size reconstructions of...

Contains artifacts related to Neil Armstrong and his role as the first person to set foot on the moon, many of which are unique e.g. the Gemini 8 spacecraft flown by Armstrong, several of his spacesuits, and a Moon rock.

Though Newark Air Force Base officially closed in 1996, some of the original mission of the base continues under civilian and military management. Around 1,000 people, mostly civilian contractors working for Boeing, repair guidance systems for America's fleet...

Court Avenue was built in 1881, before the age of the automobile. Considered the "oldest concrete street" in America, it is still in use outside the courthouse in Bellefontaine, though the street is restricted to light traffic (no trucks). A statue of the...

Robert Smithson conceived and executed this piece while he was staying at Kent State University for a week as a visiting artist in January, 1970. It was too cold for the 'mud pour' work he had expected to perform, so this substitute was hastily developed by...

One of three major Department of Energy nuclear complex sites in Ohio, the Diffusion Plant enriched uranium for use as fuel in power plants, nuclear submarines, and nuclear weapons. High Enrichment Uranium operations ceased in 1991, and low enrichment for...

Ivorydale was once the most historically significant Procter and Gamble production site - as well as one of the largest - until its sale in 2003, to St. Bernard Soap (a unit of Ontario-based Trillium Health Care Products Inc).  The factory complex of 120...

At 21,418 acres, this is the largest military landscape in Ohio. Like most other military sites in the country, it was established around World War II. Extensive facilities at the site manufactured and stored explosives during and after the War, including...