A is for.....Acadia National Park

Standing a top the world on the eastern coast of the United States.  Acadia is a beautiful location and worth a visit.  I enjoyed a summer visit there a few years ago with friends.

We enjoyed fireworks over Bar Harbor, a narrated auto tour, ranger led talks on the stars and on the peregrine falcons, some hiking, lobster dinners, and sunrise on Cadillac Mountain, amongst other things and there was much more we could have done.

Sunrise from Cadillac Mountain

So now for your opportunity to guess on my chose for "B".  A little inspiration from Robert McClousky if you are up on your children's literature this should be an easy answer.