Travellers asking for venue of LCS Summer Split :O

Greetings summoners from NA and EU~

My friend and I are coming from Taiwan and we planned to have a trip on Europe in the coming mid June to mid July and we want to watch LCS in studio desperately{{summoner:2}}
Currently I only see the tickets up to April which shows the venue is in Cologne, Germany.(We play in NA server so we can only post it here...sorry for wrong regions :(
But we have to plan our trip very soon and buy the plane tickets...train tickets...else

May Riot please let me know where is Summer Split week 6-9 is going to be held so that we can mark LCS in our travel plan :D ???
This will help two huge fans of LCS and LoL much and let us enjoy the show with everyone else :D

Thanks for the help and apologize for my poor English as I am not a native speaker of it :P