One of the Seven Wonders of Illinois, Allerton Park and Retreat Center The Park consists of over 1,500 acres, including the Sangamon River, floodplains, lowland and upland forests, and a meadow. Allerton park and its Georgian-style Mansion offer an unforgettable setting for your wedding celebration! Whatever the season, beautiful Formal Gardens and Natural Areas, a two-story Dutch hay barn, and a century-old, Georgian-style Mansion make Allerton the perfect place for your special day. Ideal for events elegant and intimate, Allerton offers an extraordinary setting unlike any other. Choose from a number of formal garden areas for a magical and romantic outdoor ceremony. Or pledge your love in an indoor ceremony in the mansion's Grand Gallery or Library. Both spaces boast expansive windows which flood them with natural light and afford pastoral views of the park. The barn also offers a rustic-inspired backdrop for your ceremony. The terrace adjacent to the library is perfect for an alfresco cocktail hour. Host a grand reception under a formal tent on the Bowling Lawn! From a cocktail reception, to a buffet, or plated dinner Allerton's Catering Department will create a tasty and personalized menu for your special day!