Margaret and I decided we would go to The Custom House first. They had a new exhibit about the Navy's presence in Key West. We thought that sounded great.
Hope the pictures make you want to tour The Custom House too. Don't want to post too many to spoil your visit.
In addition to the Navy exhibit - they have exhibits on Ernest Hemingway, the Civil War in the Keys and Mario Sanchez art to name a few. A little taste of those exhibits.
Don't forget the sculptures as you enter and exit the Museum. Really lovely.