400 Illinois Street One of Lemont's most prominent buildings located in the historic downtown area. Extensively renovated building is the perfect blend of modem amenities in a vibrant community setting. Striking architectural facade. Building showcases quaint ice cream shop that boasts vintage charm. Other units include a commercial office space and two remodeled apartments. Two apartments are incredibly spacious, Unit 1 offers 2 bedrooms & 2 baths while Unit 2 offers 2 bedrooms & 1 bath. Ample street parking available.