Reason to go to Berlin.
The Zoo-Aquarium Berlin houses ten species of jellyfish. eight of Scyphozoa and two Hydrozoa.
http://www.aquarium-berlin.de/en/experience/animal-highlights/jellyfish-breeding.html
There’s even an article about their maintance – http://www3.interscience.wiley.com/journal/119241080/abstract?CRETRY=1&SRETRY=0.