Perhaps you desire to stand in awe of our amazing earth. National Parks are great for this. In Maine, you could visit Acadia to view the Atlantic ocean. Across the country, in the state of Montana, you might choose to discover an alpine meadow in Glacier National Park.
If it is high “adventure” you seek, you might want to add Australia to your ABC bucket list, with a goal to see the Aurora Australis. You’ll have to go further north to view the Aurora borealis. I hear the Alps, Alaska, Argentina and Africa are awesome too. Where will you take your next “A” themed adventure?