It is connected to Kim Chuan Depot and has underground access for trains to run between both facilities, allowing Downtown Line trains to be stabled in the Tai Seng Facility Building, and able to access its remote tracks. It is used in tandem with Kim Chuan Depot for the operations of the Downtown Line. Road networks Two of the oldest main roads; Upper Serangoon Road & Punggol Road runs through Hougang since the town's beginning. The town is also linked to other towns by Yio Chu Kang Road in the West, Tampines Road in the East, Upper Paya Lebar Road to the south-East, Buangkok Drive & Buangkok Green in the North. The other roads in Hougang New Town links the town to bigger roads, most importantly Avenue 2, 3 which links the town from East and West. Amenities Most of Hougang's commercial activity is centred on a few shopping malls such as Hougang Mall, Kang Kar Mall, Heartland Mall, Upper Serangoon Shopping Centre and Hougang 1 (Formerly known as Hougang Point, and opened in End 1999). Similar to most other residential towns in Singapore, Hougang was designed to be a partially self-sufficient with enough amenities to minimize the number of residents commuting to the Central Area. Facilities include Hougang Sports Hall, an indoor sports complex operated by Sport Singapore which runs ClubFITT membership and sports programmes, Hougang stadium home to S.League club Hougang United, an aquatics centre, a number of parks such as Punggol Park, along with many wet markets and hawker centres. One of the more prominent landmarks in Hougang is the Buangkok Green Medical Park, which houses several medical facilities including the Institute of Mental Health (IMH) and Singapore Leprosy Relief Association (SILRA). The Hougang Central Bus Interchange serves Hougang Town with a range of bus services going to other parts of the island. It is located in Hougang Central, near Hougang Mall and it has an underground link to Hougang MRT station. This bus interchange was officially opened on 17 February 1995 by former cabinet minister Goh Chee Wee, who was then Senior Minister of State for Communications, Trade and Industry to serve all buses around the Hougang Area. Its sister bus interchange, Hougang South Bus Interchange (that is near to Kovan MRT station) ceased operations in 2004 and was converted to Kovan Hub. Two even older bus terminals operated in Hougang before the construction of the