Complex sentence: Massive fluted Corinthian pilasters flank the central three bays, these are repeated at each termination of the facade and again dividing the second from the third bay of each wing flanking the central projection.
Split into simpler sentences: Massive fluted Corinthian pilasters flank the central three bays. These are repeated at each termination of the facade and again divide the second from the third bay of each wing that flanks the central projection.