Seneca River Crossing Canals Historic District is a national historic district located at Montezuma and Tyre in Cayuga and Seneca Counties, New York. The district includes more than a mile of the Enlarged Erie Canal prism (built here between 1849 and 1857); towpath and heelpath; a drydock; the remains of the Richmond (Montezuma) Aqueduct crossing the Seneca River; remnants of the original Erie Canal, built between 1817 and 1825 and including Lock #62 and piers of the original mule bridge from that era; and a culvert that carries a stream beneath the Enlarged Erie Canal. It was listed on the National Register of Historic Places in 2005.