The Amsterdam Metro is a rapid transit system serving Amsterdam, Netherlands, and extending to the surrounding municipalities of Diemen and Ouder-Amstel. Until 2019, it also served the municipality of Amstelveen, but this route was closed and converted into a tram line. The network is owned by the City of Amsterdam and operated by municipal public transport company Gemeente Vervoerbedrijf (GVB), which also operates trams, free ferries and local buses.