High Quality Content by WIKIPEDIA articles! Historic preservation in New York is activity undertaken to conserve older buildings, ships, landscapes and other objects of cultural importance in New York in ways that allow them to communicate meaningfully about past practices, events, and people. Governmental programs for historic preservation range from Federal ownership and active operation of sites (such as the Statue of Liberty and Ellis Island in New York Harbor) to grants and subsidies provided by state government, municipal support of museums and interpretative displays (such as roadside plaques and town-history websites). Nonprofit programs include activities of state-wide and local historical associations and museums, and activities of historical societies and museums at the national level. Quasi-governmental organizations, such as the New York State Thruway Authority and Thousand Islands Bridge Authority (which have historic sites on their property), play a role as well. Private endeavors, such as investment and other choices made by private landowners to conserve historical features of their properties, are significant but less visible. During the reconstruction of the World Trade Center site in July 2010, a team of archaeologists discovered a 32-foot-long boat. The craft was at least 200 years old, dating from a time when the Hudson River was partly filled with trash and debris because of a rapidly-expanding lower Manhattan.