It is wonderful to get to see Gedolei Yisroel. Their brochos are certainly desirable. But, please, pretty please, do NOT make them into tourist attractions. These are tzaddikim who are busy learning Torah and fulfilling many aspects of Avodas Hashem. They are not background for pictures of your vacation.
I believe that they would be happier that you spend your time in your own Torah and Mitzvos, rather than coming to be a foreign spectator.