Hi George,
There are over a thousand memorials dedicated to Titanic worldwide, so it's way too many to mention on here. I recommend that you contact Brian Ticehurst through the board, as he has published a book titled Titanic Memorials Worldwide - Where They Are Located. He frequently updates it, as he put out a revised version just over a year ago. It also includes passenger and crew gravesites.
Brian's book is a very worthwhile investment, for anyone that is interested in the Titanic memorials and graves.