Remarkably beautiful landscapes. The southern deserts in Arizona or the swamps in Florida, the chaparral covered hills of Southern California.
Pretty effective implementation of a political system that both supported the rights of people and left a good mechanism for adjusting to the times. (France tried, but the French Revolution didn't quite work out so well.) Granted, it certainly hasn't been perfect here in the U.S. to which I think native Americans, blacks, Asians, homosexuals etc can attest, but we have made some progress. Right now I think we are headed backward but the system is designed so that some of these travesties can be reversed.
There used to be strong support for science and critical thinking and I think a lot of that can come back so long as we maintain a well educated populace and do not allow the country to be guided by superstition and narrow thinking.
I'm sure there's plenty more, but it's often hard to think of it.
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Never let the weeds get higher than the garden,
Always keep a sapphire in your mind.
(Tom Waits "Get Behind the Mule")