The Forge: Lemont Quarries Adventure Park

Tedens is a ghost town in Downers Grove Township, DuPage County, Illinois, United States.

SS. Cyril and Methodius in Lemont (Polish: Kościół Świętego Cyryla i Metodego) - historic church of the Roman Catholic Archdiocese of Chicago, located in Lemont, Illinois. It is a prime example of the so-called 'Polish Cathedral style' of churches in both its opulence and grand scale. Along with the Hindu Temple of Greater Chicago, it is one of the two monumental religious edifices that dominate the Lemont skyline.

Lemont is a village located in Cook, DuPage, and Will counties in the U.S. state of Illinois, and is a south-west suburb of Chicago. The population was 17,629 as of the 2020 census. The village is situated on a hillside along the south banks of the Des Plaines River. It overlooks Waterfall Glen's Midwestern Bluff Savanna on the opposite side. Lemont is home to Argonne National Laboratory and other heavy industrial sites, and has a substantial European immigrant population.

The Lemont Central Grade School is a former school building at 410 McCarthy Road in Lemont, Illinois. The school was built in 1869 to replace Lemont's first school, which opened in 1836 when the area was still largely rural. Locally quarried limestone was used to construct the school; at the time, limestone production was one of the city's main industries. Architect John Barnes of Joliet designed the Victorian building. As the city's population grew considerably during the construction of the Chicago Sanitary and Ship Canal in the 1890s, an annex was placed on the school in 1896 to accommodate additional students. The school operated until building safety issues forced its closure in 1974; at the time, it was the oldest continuously operating school in the state. The building has since been converted to condominiums.The building was added to the National Register of Historic Places on March 7, 1975.

Mount Assisi Academy was a private, Roman Catholic, all-girls high school in Lemont, Illinois that closed in 2014. It was located in the Roman Catholic Archdiocese of Chicago.

The Lemont Downtown Historic District is a commercial historic district encompassing 14 city blocks in downtown Lemont, Illinois. The district has served as the village's downtown since the 1850s, when the newly opened Illinois & Michigan Canal and subsequent limestone quarrying in the area sparked a local economic boom. It expanded through the late nineteenth and early twentieth centuries as new railroads and the Chicago Sanitary and Ship Canal brought residents and business opportunities to the village. The commercial buildings in the district exhibit a variety of common building types seen between 1850 and 1950; one-part, two-part, gable-front, and false-front buildings are all present, and their designs feature Italianate, Commercial, and revival style architecture. The district also includes several of Lemont's government buildings, including its village hall and post office.The district was added to the National Register of Historic Places on September 6, 2016.

Now the NBL Program Office, the New Brunswick Laboratory (NBL), was a United States government-owned and operated, center of excellence in the measurement science of nuclear materials. It was established in 1949 by the Atomic Energy Commission and was located in New Brunswick, New Jersey. It was relocated between 1975 and 1977 and was located, as a Federal enclave, on the site of Argonne National Laboratory, about 40 kilometers (25 miles) southwest of Chicago, Illinois. NBL was part the Department of Energy's Office of Science Chicago Office.NBL is the U.S. Government's Nuclear Materials Measurements and Reference Materials Laboratory and the National Certifying Authority for nuclear reference materials and measurement calibration standards. As an internationally recognized Federal laboratory, NBL provides reference materials, measurement and interlaboratory measurement evaluation services, and technical expertise for evaluating measurement methods and safeguards measures in use at other facilities for a variety of Federal program sponsors and customers. NBL functions as a Network Laboratory for the International Atomic Energy Agency (IAEA). NBL was reorganized into the NBL Program Office in 2016, and its nuclear reference materials were transferred to a new distribution center located near Oak Ridge, Tennessee. It is part of the National Nuclear Security Administration's Office of Defense Programs.

Lemont Methodist Episcopal Church, also known as the Old Stone Church, is a historic church building at 306 Lemont Street in Lemont, Illinois. It was built in 1861 and added to the National Register in 1986.

The Advanced Photon Source (APS) at Argonne National Laboratory (in Lemont, Illinois) is a storage-ring-based high-energy X-ray light source facility. It is one of five X-ray light sources owned and funded by the U.S. Department of Energy Office of Science. The APS began operation on March 26, 1995. It is operated as a user facility, meaning that it is open to the world’s scientific community, and more than 5,500 researchers make use of its resources each year.

The Track Imaging Cherenkov Experiment (TrICE) is a ground-based cosmic ray telescope located at Argonne National Laboratory near Chicago, IL. The telescope, which contains a Fresnel lens, eight spherical mirrors, and a camera with 16 multianode photomultiplier tubes, uses the atmospheric Cherenkov imaging technique to detect Cherenkov radiation produced when cosmic rays interact with particles in the Earth's atmosphere. The telescope is primarily a research and development tool for improving photomultiplier tube cameras and electronic systems for future gamma and cosmic ray telescopes. It is also used to study the energy and composition of cosmic rays in the TeV–PeV range, and the collaboration is currently conducting pioneering work in detecting direct Cherenkov signals from cosmic rays.

Chicago Pile-5 (CP-5) was the last of the line of Chicago Pile research reactors which started with CP-1 in 1942. The first reactor built on the Argonne National Laboratory campus in DuPage county, it operated from 1954-1979.CP-5 was a thermal-neutron reactor using enriched uranium as fuel and heavy water as coolant and as a neutron moderator. It produced neutrons for use in research. The reactor had an output rating of 5 megawatts.Cleanup and decommissioning of the site of CP-5 was started in 1991 completed in 2000. The cleanup process included removal of all contaminated equipment and spent fuel, decontamination of the reactor vessel and associated plumbing, and removal of the spent fuel pool, reactor internals and the hot cell liner. The accessible areas of the structure have been certified as having radiation levels equivalent to background radiation.

Lemont station is a station on Metra's Heritage Corridor in Lemont, Illinois. The station is 25.3 miles (40.7 km) away from Union Station, the northern terminus of the line. In Metra's zone-based fare system, Lemont is in zone E. As of 2018, Lemont is the 105th busiest of Metra's 236 non-downtown stations, with an average of 455 weekday boardings.As of 2022, Lemont is served by three inbound trains in the morning and three outbound trains in the evening on weekdays only. Lemont station was originally built by the Chicago and Alton Railroad in 1859 and designed in a manner similar to that of Lockport station. The tracks run parallel to the Illinois and Michigan Canal, and shares the right-of-way with Amtrak's Lincoln Service and Texas Eagle trains, however, no Amtrak trains stop here.