Complex sentence: Bounded within the Searles Tenney Nevins Historic District are the Spicket Falls Historic District and the Pleasant-High Historic District both are registered with the National Register of Historic Places, as are many of the other buildings within the area.
Split into simpler sentences: Bounded within the Searles Tenney Nevins Historic District are the Spicket Falls Historic District and the Pleasant-High Historic District. Both are registered with the National Register of Historic Places, as are many of the other buildings within the area.