The city's modern preservation efforts began when the Dutch Reformed Church, a Greek Revival structure designed by Alexander Jackson Davis, was slated for demolition as part of urban renewal after the congregation left the decaying building in 1967. The movement to stop it led to the development of a historic district, now the second largest in New York State. The church was added to the National Register of Historic Places three years later, and in 2001 became the city's second National Historic Landmark after Washington's Headquarters.