Leigh has a traditional town centre with daily outdoor and indoor markets. Part of the town centre is pedestrianised and there are local independent and multiple retailers. The Spinning Gate Centre in the centre of town has about thirty retail units. A retail park developed on the old Parsonage Colliery site is within walking distance of the town centre.

Opened in 2008 Leigh Sports Village has an 11,000-capacity stadium (anchored by Leigh Centurions and shared with the reserves of Blackburn Rovers), an athletics arena for Leigh Harriers, facilities for Leigh East Rugby League Club, a college campus, hotel, leisure retail and business facilities for the community. In 2011 a Morrisons store opened at the sports village.

Another regeneration project on the site of the former Bickershaw Colliery complex which closed in 1992 will redevelop the site and canal side with a country park and housing. In 2011 "The Loom" a £50million retail development opened on the north side of the Bridgewater Canal with a seven-screen cinema, Tesco Extra store, Nando's, Frankie and Benny's and The Real China restaurants.

Major landmarks in Leigh are the red sandstone parish church and across the civic square, Leigh Town Hall and its associated shops on Market Street. The Grade II listed Obelisk that replaced the original market cross is also situated here. Many town centre buildings including the Boar's Head public house .are in red Ruabon or Accrington bricks, often with gables and terracotta dressings. There are several large multi-storey cotton mills built along the Bridgewater Canal that are a reminder of Leigh's textile industry but most are now underused and deteriorating despite listed building status. Leigh's War Memorial by local architect J.C. Prestwich is at the junction of Church Street and Silk Street and is a Grade II listed structure. St Joseph's Church and St Thomas's Church on opposite sides of Chapel Street are both imposing churches using different materials and styles.