Northerly Island is a 91-acre (370,000 m²) man-made peninsula along Chicago's lakefront. The site of the Adler Planetarium, Northerly Island connects to the mainland through a narrow isthmus along Solidarity Drive dominated by Neoclassical sculptures of Kościuszko, Havliček and Copernicus. With the demolition of Meigs Field Airport, it is now a part of the Museum Campus and has been converted into parkland.