This aqueduct, constructed by John Rennie Snr, is considered to be the finest in the North west.
NB - Please see the comment below. This rather beautiful photo of the Lune aqueduct is from NRT whose Flickr pages are something to behold. His (or her) photography is simply beautiful.
The aqueduct, with its five classical stone arches, carries the Lancaster Canal over the River Lune using a rusticated form of masonry. The piers were built in a hurry using special form of concrete incorporating Italian pozzolana powder, which allowed them to be finished before the 1794 /5 winter floods arrived.
The structure was, as ever, over budget at £48,000 - an overrun which played a large part in the plans to connect the canal to Preston being abandoned.