and InfoSpace. Companies like Paccar, Puget Sound Energy, Symetra Insurance, Boeing, Verizon Wireless, Google, Amazon, Yahoo, Walt Disney, and Fox Sports also have national, major divisional or regional offices in the Eastside. The Eastside is also a hub for biotech and medical companies including Amgen, Icos, and Merck. Many local magnates, including Bill Gates, Steve Ballmer, John Stanton, and Craig McCaw, live in the Eastside's cities. The Eastside is also home to many video game and interactive media companies. These include Bungie, Valve, ArenaNet, Sucker Punch, Monolith Productions, Sony Online Entertainment, Warner Brothers Entertainment, Microsoft Game Studios, Epic Games, Unity Technologies and DigiPen Institute of Technology. Kirkland hosts the annual Junior League Softball World Series. Kirkland Signature is also the own brand of Costco, which founded its first warehouse in Seattle (#1), and operates from its corporate headquarters in the Eastside city of Issaquah. Transportation Air There are public and private airfields on the Eastside. Major facilities include: Kenmore Air Harbor provides scheduled seaplane service to various points in the Northwest United States and southwest British Columbia. Renton Municipal Airport adjacent to the Boeing factory has a runway. Bellevue Airfield was closed in 1983. There is also a landing zone for paragliding at the base of Tiger Mountain at . Rail The Woodinville Subdivision is a rail line built in the late 19th century. In 2008, the Wilburton Tunnel was eliminated, severing the line. The right-of-way was purchased the same year by the Port of Seattle. Eastside cities and King County purchased portions of the Port property for conversion to a rail trail called the Eastside Rail Corridor. Road The Eastside is connected to Seattle by the Evergreen Point Floating Bridge from Medina (State Route 520) and the Lacey V. Murrow Memorial Bridge and Third Lake Washington Bridge from Bellevue via Mercer Island (Interstate 90). It is also served by Interstate 405, a loop route of Interstate 5 that runs to the east of Lake Washington from Tukwila to Lynnwood. References Seattle metropolitan area Geography of King County, Washington