Redmond sits in King County between Lake Sammamish and Lake Washington, anchoring the Eastside tech corridor that includes Overlake, Willows, and Education Hill neighborhoods. The city extends from Marymoor Park on the south end through downtown and up to the Sammamish River valley, with Woodinville to the north and Bellevue to the south. Microsoft's headquarters drives much of the local economy, joined by Nintendo of America and a dense concentration of software companies, though the city also maintains its connection to cycling culture through the Sammamish River Trail and velodrome at Marymoor.