Illinois

Savvis operates this data center in Bensenville, near Chicago’s O’Hare airport. It is used by Goldman Sachs. A new and larger data center has recently been built across the road at 2200 Busse. Suburban warehouse districts near major airports are often good...

350 East Cermak Road is a large data center that is home of Greater Chicago International Internet Exchange, GCIIX, and the Chicago Exchange, ChIX. It is located in a renovated warehouse operated by Digital Realty Trust Company.

427 South LaSalle Street is a former Western Union building downtown, next to the Board of Trade. It is now one of the principal internet exchange points in Chicago, and operated by the CoreSite Company.

The ACME Coke plant, which preservationists sought to save as a relic to commemorate the steel industry of the region, is one of several old steel relics in the Calumet River area, south of Chicago. The plant ceased operation in 2001, and was left orphaned by...

A museum devoted to the mineral fluorite (also known as fluorspar, especially within those industries which regularly use various processed forms of it), that boasts specimens, photographs, and displays pertaining to its mining and refining. The museum is...

At 1,125 acres, this is one of the largest of ADM's 200+ manufacturing facilities worldwide. The company principally purchases raw farm products, the big American staples like wheat, corn, and soy, and transforms them into ingredients that are sold in bulk to...

A large and diversified federal R&D lab, owned by the Department of Energy, and operated by the University of Chicago. It is one of the major scientific campuses in the USA. Facilities at this 1,700 acre installation include a superconducting linear...

This course, one of many in the office park suburbs west of Chicago, is notable for being the location where three golfers, including the champion Lee Trevino, were struck by lightning during a public tournament in 1975. Though they all lived, lighting...

A chemical waste site with a capacity of 3 million cubic yards, once operated by Chemical Waste Management (a subsidiary of waste giant WMX Technologies), until its closure in 2008. Currently there are over twenty large, Subtitle C, commercial chemical waste...

A 2,125-acre Air Force Base now closed, and undergoing clean-up. Chanute was constructed in 1917 as a storage site and training base. Technical training continued until 1993, when all military operations ceased, and the base began to be converted to civilian...

Chicago's main airport is usually cited as one of the busiest airports in the world, with over 2,000 take-offs and landings a day.

The nation's largest publicly held collection of postcards and related materials, boasting around 2.5 million postcards alone. The Postcard Archives represent all fifty states, all the provinces of Canada, and about 115 other countries. It is computer-indexed...

A decaying shopping mall shuttered since 1979, the Dixie Square Mall was an economic reflection as well as centerpiece of the depressed south-side suburb town of Harvey, IL once known as "the gateway to the south suburbs." Many attempts (including a federal...

The first 18-hole course in the USA, they say, was built here in this suburb west of Chicago in 1892 by the Chicago Golf Club. The club built a better...

The Effigy Tumuli earthwork consists of five geometrically abstracted animal forms, created on old mining land along the Illinois River. Now a state park, the sculpture is in flux, parts eroding, parts overgrown, others nearly bare. It is one of the largest...

FermiLab, west of Chicago, is one of the major physics research sites in the USA, and has the nation's only large-scale particle accelerator. Scientists at the lab have made significant discoveries in the field of particle physics, involving top and bottom...

The lab where the first controlled nuclear chain reaction took place in 1942, was in a converted squash court at the University of Chicago, under the grandstands at the Stagg Field Stadium. Stagg Field was demolished in the late 1960's, but a monument was...

This meridian was established in 1815, initially to survey a relatively small area, lands in the northwest corner of Illinois, mostly between the Illinois River and the Mississippi, that had recently been acquired from the Indians. The Initial Point was...

The largest US Navy training center. All Navy recruits go through boot camp here, and more than three million sailors have been trained here since 1911. The base covers 1,628 acres on the shore of Lake Michigan, north of Chicago. The National Museum of the...

When these gates on the Chicago River (a component of what was then known as the Chicago Drainage Canal), were opened with much fanfare in 1900, the course of the river reversed direction: the culmination of an eight year engineering project. The river...

The largest government-owned weapons manufacturing plant in the country. It is operated by the U.S. Army's Industrial Operations Command, and staffed mostly by civilians. Producing weapons on this 946-acre island in the Mississippi River since 1862, it...

Museum for the U.S. Army arsenal, located on Rock Island, the largest federally-owned munitions plant in the nation. Displays of historical arsenal photos and weapons. Located in Building 60.

Until its closure in 2000, the Savanna Army Depot was one of the largest U.S. Army munitions depots in the U.S. From 1917 until 1995, the U.S. Army used the site to test artillery and ammunition, to store as well as to destroy obsolete ordnance, and to...

One of the nation's six original low-level radioactive waste sites. Sheffield was opened in 1967, was filled to permitted capacity in 1978, and was subsequently closed. For much of its life it was operated by Nuclear Engineering Co. (which later became US...

The Stickney Water Reclamation Plant is one of the largest sewage treatment plants in the world. It serves a 260-square mile area, with around 2.3 million people. Up to 1,440 million gallons of sewage per day can be treated in the 166 tanks at this 413-acre...

The establishment of the Third Principal Meridian followed Indiana’s Second Principal Meridian and Ohio’s First Principal Meridian. It was surveyed in 1815, to measure the land that would soon become the State of Illinois. The meridian originates from a Point...