This 1951 minimalist dwelling by Ludwig Mies Van der Rohe sits just down the Fox River from Aurora. Constructed of steel, wood, and travertine marble, it appears to nearly float against a backdrop of serene river views and gardens. Now operated as a museum by the National Trust for Historic Preservation, Farnsworth House may only be seen by guided tour (reservations are highly recommended). Brad Pitt chose the site for a Japanese jeans commercial he shot in 2007, raising $60,000 for its upkeep. Note that the house is a ½ mile wooded walk from the visitor center.