Complex sentence: None of the original machinery exists in the well preserved red brick building, however at the eastern end hang the original copper letters spelling the words "Power Station" which were salvaged from the main building prior to demolition.
Split into simpler sentences: None of the original machinery exists in the well preserved red brick building. However, at the eastern end hang the original copper letters spelling the words "Power Station" which were salvaged from the main building prior to demolition.