Complex sentence: The entire waterfront where the "Third Generation" pier was situated was created in the late 1950s following a major land reclamation which shifted it from its position at the time, level to the Mandarin Hotel.
Split into simpler sentences: The entire waterfront where the "Third Generation" pier was situated was created in the late 1950s following a major land reclamation. The shoreline was shifted from its position at the time, level to the Mandarin Hotel.