Nov 132024
Holland Tunnel began operating in 1927. Named after its designer, Clifford Milburn Holland, the tunnel connects New Jersey and Manhattan; it runs under the Hudson River. It was the first American underwater tunnel. The designers had to build gigantic fans that would remove carbon monoxide, generated by the cars, from the tunnel. Currently about 90,000 vehicles use the tunnel per day. The tunnel was designated a United States National Historic Landmark on November 4, 1993.