Hamburg: Refurbishment of metro line U 3 - Urban Transport Magazine
U3 (Hamburg U-Bahn) - Wikipedia
Elbphilharmonie Hamburg - U3 CLOSURE! The stretch of track on the underground line U3 between the stops St. Pauli and Baumwall is closed until 20 September. There is no replacement bus service,
List of Hamburg U-Bahn stations - Wikiwand
U-Bahn-Linie 3 (Hamburg) – Wikipedia
Hamburg - city map | Country profile | Railway Gazette International
UrbanRail.Net > Europe > Germany > Hamburg U-Bahn (Hochbahn) and S-Bahn