Otsego 2000 Invites Houses of WorshipTo Join Open House By WRILEY NELSONCOOPERSTOWN Otsego 2000 has invited historic churches and other houses of worship to participate in the New York Landmarks Conservancy’s 13th annual Sacred Sites Open House on May 20 and 21. Sacred Sites, the NYLC’s only major statewide program, celebrates the diversity and history of New York’s houses of worship. The open house has attracted thousands of visitors to religious buildings over the last decade to learn about their…