No you do not, but if you want to see the Lewis and Clark museum you do need a discovery pass or pay to go in, it is worth it.
Not at the Battery. But some nearby areas have a Day use fee.$5
You do need a parking pass if you plan to use the day use area next to it though.
No,day use is free to go and explore huge cement structures.
No but yes I'f you'll stay overnight
$5 per car to enter, truck tour extra but worth it.
Not for day use
Nope. But if you're camping then yes.
Nope
No fee unless u camp overnight
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