There are 125 listed buildings in Wigan out of the 216 listed buildings in the wider borough with nine at Grade II* in the town. As well as being a Grade II* listed structure, Mab's Cross is the only Scheduled Monument in Wigan itself, out of the 12 in Wigan Borough. It is a medieval stone cross that probably dates from the 13th century. There is a legend surrounding the cross that Lady Mabel Bradshaigh, wife of Sir William Bradshaigh, did penance by walking from her home, Haigh Hall, to the cross once a week barefoot for committing bigamy. There is no evidence the legend is true, as there is no record that Lady Mabel was married to anyone other than Sir William Bradshaigh , and several facets of the story are incorrect. Haigh Hall was built in 1827–1840 on the site of a medieval manor house of the same name, which was demolished in 1820. The hall is surrounded by a country park, featuring areas of woodland and parkland. The former town hall was a Grade II listed building.