 It is about north of Blackpool Tower, which is roughly the midpoint of Blackpool's promenade.The sea front is particularly straight and flat on this stretch of coastline, and the pier extends at right angles into the Irish Sea, more or less level with the promenade.The construction of Blackpool Pier (eventually North Pier) started in May 1862, in Layton-cum-Warbreck, part of the parish of Bispham.