Pleasant Valley Wine Company, also known as the Great Western Winery, is a winery located about a mile West of Hammondsport near the south end of Keuka Lake on Pleasant Valley Road (County Road 88). Pleasant Valley Wine Company was established in 1860 and proudly displays the designation U.S. Bonded Winery No. 1 and has eight remarkable stone buildings listed on the National Register of Historic Places. The five oldest structures were built in the 1860's in the Italianate style and are constructed of fieldstone.