Forget music festivals, rooftop parties and that burger-not-burger at Nishi - summer's hottest ticket is to the Museum of Ice Cream, and they've been sold out since before it even opened.

But before you fork over a serious chunk of your ice cream budget, that will be changing soon, according to TimeOut. More an interactive art gallery than museum, the childhood dreams-meet-science experiment will release more tickets through its newsletter, so sign up now.

Or, if you've got an artistic eye, you can win two tickets in their Instagram competition, going on through Aug. 13: