Harlem/Lake station

Marshall Field and Company Store is a building in Oak Park, Illinois that was added to the National Register of Historic Places on January 21, 1988. It is one of the two locations (along with the Evanston location) that the company chose to expand to when it decided to add suburban stores. The store is a miniature replica of the Marshall Field and Company Building in the Chicago Loop and a twin of the Evanston store.The building served as a Marshall Field's store from its opening until 1986, when Marshall Field's then-owner BATUS Inc. closed it because it was deemed out of date and too costly to operate. The building housed a Borders book store, until all the locations were closed in 2011. Today, it houses several offices.

Forest Park was an at-grade station on the Chicago Transit Authority's 'L' system, serving as the former western terminus of the Lake Street Elevated.

The Forest Preserve District of Cook County is a governmental commission in Cook County, Illinois, that owns and manages a network of open spaces, containing forest, prairie, wetland, streams, and lakes, that are mostly set aside as natural areas. Cook County contains Chicago, and is the center of the most densely populated urban metropolitan area in the Midwest. The Forest Preserve lands encompass approximately 70,000 acres (110 sq mi; 280 km2), about 11% of the county, providing open space within its urban surroundings. It contains facilities for recreation, as well as a zoo and a botanic garden.

The Harlem Yard is a CTA rail yard in Forest Park, Illinois which stores cars for the Green Line of the Chicago Transit Authority. Currently, 5000-series railcars are stored here. It is adjacent to Harlem/Lake station.

Oak Park is a Metra commuter railroad station in Oak Park, Illinois, just west of Chicago. It is served by Metra's Union Pacific West Line, with service east to Ogilvie Transportation Center in Chicago and as far west as Elburn, Illinois. Travel time to Chicago is 16 to 20 minutes. As of 2022, Oak Park is served by 18 of 20 trains in each direction on weekdays, by all 10 trains in each direction on Saturdays, and by all nine trains in each direction on Sundays and holidays. As of 2018, Oak Park is the 52nd busiest of the 236 non-downtown stations in the Metra system, with an average of 991 weekday boardings. It is the final stop for most UP/West trains before the terminus at Ogilvie Transportation Center. The station is located along North Boulevard between Marion Street and Harlem Avenue, Oak Park's western border with River Forest and Forest Park. The Chicago Transit Authority's Green Line ends at Harlem/Lake and is connected directly to this station at Marion Street. Downtown Oak Park, which includes a large shopping district spread over both Oak Park and River Forest, is nearby with many stores centered on Harlem Avenue and Lake Street.

Wisconsin/Randolph was a rapid transit station on the Chicago "L" between 1899 and 1903 in Oak Park, Illinois. It was the western terminus of the Randolph Street branch operated by the Lake Street Elevated Railroad.

Pleasant Home, also known as the John Farson House, is a historic home located in the Chicago suburb of Oak Park, Illinois, United States. The large, Prairie style mansion was designed by architect George Washington Maher and completed in 1897. The house was added to the U.S. National Register of Historic Places on June 19, 1972. Exactly 24 years later, in 1996, it was declared a National Historic Landmark by the United States Department of the Interior.

The Frank W. Thomas House is a historic house located at 210 Forest Avenue in the Chicago suburb of Oak Park, Illinois, United States. The building was designed by architect Frank Lloyd Wright in 1901 and cast in the Wright-developed Prairie School of Architecture. By Wright's own definition, this was the first of the Prairie houses - the rooms are elevated, and there is no basement. The house also includes many of the features which became associated with the style, such as a low roof with broad overhangs, casement windows, built-in shelves and cabinets, ornate leaded glass windows and central hearths/fireplaces. Tallmadge & Watson, a Chicago firm that became part of the Prairie School of Architects, added an addition to the rear of the house in 1923.On September 14, 1972, the Frank Thomas House was added to the U.S. National Register of Historic Places.

Calvary Memorial Church of Oak Park is a nondenominational church on Lake Street in Oak Park, Illinois, United States.

The Peter A. Beachy House is a home in the Chicago suburb of Oak Park, Illinois that was entirely remodeled by architect Frank Lloyd Wright in 1906. The house that stands today is almost entirely different from the site's original home, a Gothic cottage. The home is listed as a contributing property to the Frank Lloyd Wright-Prairie School of Architecture Historic District, which was listed on the U.S. National Register of Historic Places.

The Edward R. Hills House, also known as the Hills–DeCaro House, is a residence located at 313 Forest Avenue in the Chicago suburb of Oak Park, Illinois. It is most notable for a 1906 remodel by architect Frank Lloyd Wright in his signature Prairie style. The Hills–DeCaro House represents the melding of two distinct phases in Wright's career; it contains many elements of both the Prairie style and the designs with which Wright experimented throughout the 1890s. The house is listed as a contributing property to a federal historic district on the U.S. National Register of Historic Places and is a local Oak Park Landmark. Since construction, the home has undergone many changes. During the 1906 remodel, the original late 19th century Stick style structure was moved and essentially completely rebuilt. Alterations carried out between 1912 and 1965 obscured some of Wright's intended design. In 1976, a major fire destroyed or damaged much of the house. The house was immediately reconstructed and partially restored. This was furthered by another partial restoration by the current home owners. As a result of the remodels, the house today bears the work of at least four different architects. The house remains a private residence, but it is occasionally opened for special tours.

The Nathan G. Moore House, also known as the Moore-Dugal Residence, is a house designed by Frank Lloyd Wright. The house was built one block south of Wright's home and studio at 333 Forest Avenue in the Chicago suburb of Oak Park, Illinois. It was originally completed in 1895 in the Tudor Revival style at the request of client Nathan Moore. Wright obliged his client's wishes, but long after disliked the house for its adherence to historical styles. A 1922 fire gave Wright the opportunity to redesign the house. The structure was completely rebuilt above the first or lowest floor in a manner in keeping with Wright's other works of the late 1910s and early 1920s. While the new design stayed evocative of Tudor architecture, the house was heavily ornamented by details of Sullivanesque, Mayan, and other exotic origins. Wright's second scheme remains largely intact today and the house continues to be a private residence despite a brief period as a tour home.