Complex sentence: Richardson designed a cluster of distinguished 1880s houses in the Avon Hill neighborhood of Cambridge, Massachusetts--33 Washington Avenue and 37 Lancaster Street are examples of the Shingle Style, 26 and 49 Washington Avenue are examples of the Queen Anne.
Split into simpler sentences: Richardson designed a cluster of distinguished 1880s houses in the Avon Hill neighborhood of Cambridge, Massachusetts. The houses at 26 and 49 Washington Avenue are examples of the Queen Anne.