I have this great interest in the Titanic. It's the subject I love to collect books about and study. I've come to refer to other's interests as "their Titanic".
My husband enjoys reading about the Civil War. He has several books, and has visited many of the battlefields and forts. That is his Titanic.
My dad loves to read about Lewis and Clark. That is his Titanic.
So here is my question of the day: What is your Titanic?