The Port Authority of New York and New Jersey (PANYNJ; stylized, in logo since 2020, as Port Authority NY NJ) is a joint venture between the U.S. states of New York and New Jersey, established in 1921 through an interstate compact authorized by the United States Congress. The Port Authority oversees much of the regional transportation infrastructure, including bridges, tunnels, airports, and seaports, within the geographical jurisdiction of the Port of New York and New Jersey. This port district is generally encompassed within a radius of the Statue of Liberty National Monument. The Port Authority is headquartered at 4 World Trade Center.