...and substantial taxpayer subsidies. That's why the donations are suggested and not required. Most if not all museums get some taxpayer subsidies but they aren't as much as the Met and AMNH receive thus there are specific admissions fees, not suggested donations. If you're a US taxpayer, your money is already here. If you're not from the US and feel like paying more money, feel free. ^ If money is tight for the OP, these two museums are affordable for everybody because YOU set the price of admission.