 Oldham 's built environment is characterised by its 19th @-@ century red @-@ brick terraced houses , the infrastructure that was built to support these and the town 's former cotton mills – which mark the town 's skyline . The urban structure of Oldham is irregular when compared to most towns in England , its form restricted in places by its hilly upland terrain . There are irregularly constructed residential dwellings and streets clustered loosely around a central business district in the town centre , which is the local centre of commerce . In 1849 , Angus Reach of Inverness said : 
 Oldham <a href='null_genetive' title='1'><mark>'s</mark></a>built environment is characterised by its 19th @-@ century red @-@ brick terraced houses , the infrastructure <a href='null_relcl' title='2'><mark>that</mark></a>was built to support these and the town <a href='null_genetive' title='3'><mark>'s</mark></a>former cotton mills – which mark the town <a href='null_genetive' title='4'><mark>'s</mark></a>skyline . The urban structure of Oldham is irregular when compared to most towns in England , its form restricted in places by its hilly upland terrain . <a href='dey_it' title='5'><mark>There</mark></a> are irregularly constructed residential dwellings and streets clustered loosely around a central business district in the town centre , which <a href='drop_aux' title='6'><mark>is</mark></a>the local centre of commerce . In 1849 , Angus Reach of Inverness said : 
Oldham  built environment is characterised by its 19th @-@ century red @-@ brick terraced houses , the infrastructure was built to support these and da town  former cotton mills – which mark tdatown  skyline . The urban structure of Oldham is irregular when compared to most towns in England , its form restricted in places by its hilly upland terrain . It is irregularly constructed residential dwellings and streets clustered loosely around a central business district in the town centre , which thdaocal centre of commerce . In 1849 , Angus Reach of Inverness said :