North Riverdale is the northernmost part of the Riverdale neighborhood of the borough of the Bronx in New York City, particularly above 254th Street. It is a residential sub-neighborhood, and shares its northern border with Yonkers, New York in Westchester County. The northernmost point in New York City is at the Hudson River on the campus of the College of Mount Saint Vincent. Description One of the geographic characteristics which gives all of Riverdale its suburban quality is that it lies on a high ridge which separates it from the rest of the city. The highest part of the ridge, at 284.5 feet above sea level, lies in North Riverdale, near Iselin Avenue and 250th Street. North Riverdale has been described as "leafy" and "sleepy" and, by one resident, "the last bastion of gracious living in New York City." The neighborhood is generally wealthy and mostly free of serious crime with the exception of grand theft auto. It features a mixture of private residences and apartment buildings. Traditionally a bastion of Irish Catholics, since 2003 and the building of the Salanter Akiba Academy (SAR) High School the neighborhood has seen an influx of Orthodox Jewish families. While Riverdale as a whole has long had a sizable Orthodox Jewish population – and overall is predominantly Jewish – North Riverdale has not. In 1998, residents of North Riverdale joined citizens of Yonkers in protesting the building of the Riverdale Classic Residence, a 17-story retirement home which would be located on Riverdale Avenue. Although the building would be sited in Yonkers, because it would sit on the top of a hill, North Riverdale residents feared that it would tower over the smaller apartment buildings and single family residences there. Despite the protests, the building, which did not require a hearing to be approved, was built at its intended height. Notable places Points of interest in the neighborhood include the Hillside Residential Enclave on Ladd Road and the James Strain House, both listed by the AIA Guide to New York City; the Monastery of the Visitation on Arlington Avenue at West 256th Street; the Riverdale Yacht Club on the Hudson River at West 254th Street, built c.1880; the Passionist Fathers and Brothers Monastery on Palisades Avenue; the Riverdale Neighborhood House, founded in 1920 and located at 5221 Mosholu Avenue; the former Diplomatic Residence of the United Nations Mission of the U.S.S.R, a 19-story apartment