Blasphemous kippas (yarmulkes)
The Western Wall in Jerusalem.
People leave notes in the wall because they believe it's the closest one can get to God on earth. When they leave, they walk backwards to avoid turning their back on the holiest site in Israel.
An oasis in the desert.
A mud bath after swimming in the Dead Sea is supposed to be great for your skin. It was freezing there, but it was our only chance to do it. The Israelis politely declined.