Complex sentence: Most of the buildings including the String of Pearls have been demolished, the 1953 power plant was imploded in 2006, the Corcoran treatment building was torn down in 2008.
Split into simpler sentences: Most of the buildings, including the String of Pearls, have been demolished. The 1953 power plant was imploded in 2006, the Corcoran treatment building was torn down in 2008.