Complex sentence: The main building was designed by Philip Herepath in 1878 in the Italianate style, it was demolished in the early 1960s and replaced by a 10 story modernist block which still stands on the hill.
Split into simpler sentences: The main building was designed by Philip Herepath in 1878 in the Italianate style. It was demolished in the early 1960s and replaced by a 10 story modernist block which still stands on the hill.