Complex sentence: It was built in 1920 to commemorate the realignment of the harbour and is located where "Ballard Pier", a small pier once existed with an approach jetty at right angles to the pier.
Split into simpler sentences: It was built in 1920 to commemorate the realignment of the harbour. It is located where "Ballard Pier", a small pier once existed with an approach jetty at right angles to the pier.