Complex sentence: The present building was completed in 1997, five years after Stirling's death, and is one of the most successful postmodern buildings in London with use of bold, but perhaps unsubtle, forms and colours in a compact assembly.
Split into simpler sentences: The present building was completed in 1997, five years after Stirling's death. It is one of the most successful postmodern buildings in London with use of bold, but perhaps unsubtle, forms and colours in a compact assembly.