- Hydra in Augsburg
- Hydra in Bayreuth
- Hydra in Bensheim
- Hydra in Bergisch Gladbach
- Hydra in Bocholt
- Hydra in Bremen
- Hydra in Bremerhaven
- Hydra in Duisburg
- Hydra in Emden
- Hydra in Erlangen
- Hydra in Euskirchen
- Hydra in Fürth
- Hydra in Gifhorn
- Hydra in Gummersbach
- Hydra in Gütersloh
- Hydra in Hagen
- Hydra in Heilbronn
- Hydra in Hildesheim
- Hydra in Homburg
- Hydra in Ingolstadt
- Hydra in Kiel
- Hydra in Königs Wusterhausen
- Hydra in Krefeld
- Hydra in Leipzig
- Hydra in Limburg an der Lahn
- Hydra in Lippstadt
- Hydra in Marburg
- Hydra in Minden
- Hydra in Mönchengladbach
- Hydra in Oldenburg
- Hydra in Osnabrück
- Hydra in Paderborn
- Hydra in Pforzheim
- Hydra in Ratingen
- Hydra in Remscheid
- Hydra in Reutlingen
- Hydra in Rheine
- Hydra in Saarbrücken
- Hydra in Schwerin
- Hydra in Siegen
- Hydra in Sigmaringen
- Hydra in Uelzen
- Hydra in Viersen
- Hydra in Villingen-Schwenningen
- Hydra in Waiblingen
- Hydra in Waldshut-Tiengen
- Hydra in Weimar
- Hydra in Wismar
- Hydra in Witten
- Hydra in Worms
- Hydra in Würzburg