Streetdirectory.com Nam Ann Siang Theon is located in Hougang District, one of the many heartlands in Singapore. Its main residential belt comprises of HDB flat and several condominiums along Lorong Ah Soo and Rosyth. For true local shopping, Heartland Mall offers the common likes of book store, restaurants and sports shops. Hougang Mall, the family mall, offers something for every family member: supermarkets (NTUC FairPrice), home furnishing store (Harvey Norman), family diners (Cafe Cartel) and banks. If you are into sports, head to the nearby Hougang Stadium and Punggol Park.