Osogbo is 105 times larger than Riverside Park (Manhattan).
Area: 46 km2 calculated
Osogbo is a city in Nigeria, the capital of Osun State. Osogbo city seats the Headquarters of both Osogbo Local Government Area and Olorunda Local Government Area. It is some 88 kilometers by road Northeast of Ibadan. Wikipedia
Area: 0 km2 calculated
Riverside Park is a scenic waterfront public park on the Upper West Side of the borough of Manhattan in New York City, operated and maintained by the New York City Department of Parks and Recreation. Wikipedia