Returning player needs some direction

Hiya,

So I decided to start building my Springfield again. I used to play this game back in 2014 and I think the last time I booted it up was somewhere in 2015 lol.

I noticed that there is no more Krustyland as it got nuked but instead everything is now in the Springfield part. I also saw there is a whole new section with a beach and everything.. But I have no clue on how to unlock it.

Anyone can give me directions as to what I should do and how to unlock it :)

Thanks in advance.