For me it would be Maine. Since i have family there i go there about once every couple of years. The place is amazing and we always go to the nice harbor of Portland Maine.

(Ariel view of Portland Maine)
Also when we are there we would always go to Flatbreads Pizza, the best damn pizza in all of Portland. And a great eating spot since up front at the water they have a big ass window to see all the boats go by

And also there they have the "Childrens Museum" of Portland. Which is basically well, the childrens museum of Portland. Each city or most cities in the US have a "Childrens Museum" of some kind. Where children go and play. This one in portland is loving kickass and they have a Firetruck, Gas Station with mini cars, Lobster boat that you can go on and catch fake crab and lobster, A fake store with a working ATM that dispenses fakedollars and cash register with a check stand, A Treehouse that goes 2 story's up but the entire thing isn't climable on the inside (Cramped as forget in there too if your like 7 years old), A Head of a Space Shuttle that has all the buttons and stuff, a cool as area with a ball that goes through all these cool places and stuff along with a mini-river that has toy boats and stuff going through it, a exhibit that always changes, and lastly outside if its not raining or anything they have a kickass pirate ship that i never got to play on since when we always go there its raining or they dont have it open. (Photos Below)
Inside of the firetruck with some kid in it

The lobster boat again with some kids in it

The Space Shuttle (Keep in mind, its badass because it also hangs off of the 2nd story and it overlooks the bottom floor)

Didnt think id find it but this is the Mini Gas station they have there

The mineh river

Also, im in 7th grade and that place is mostly for little kids. But that place is still loving fun as hell and is the ultimate playground.
Now we move on to the famous lighthouse of Maine, Portland Headlight. Ive been to this place multiple times and it is great. The lighthouse is amazing and the park around it is awesome. Including Fort Williams.

Fort Williams in all its Glory

Last time we where in Maine my brother went to a camp where he played Capture the Flag in the Forest surrounding the area. Lucky Bastard.
Sorry for the big ass wall of text. Didnt pay attention to how big it was getting.
So forums, wat is yer favorite passtime places?
EDIT: Also, the first or second time we went there we listened to "Shania Twain-Forever and For Always". So now whenever i hear that song i think of that place. And that song is loving amazing so dont you dare dis it.