Israel has a very lively gay scene. Tel Aviv has plenty of rainbow-coloured flags, a huge Gay Pride Parade and plenty of hang-outs. Haifa and Jerusalem have smaller gay communities. The resort town of Eilat is gay friendly, although the scene is mostly Israeli tourists. Most local organisations offering support, information, contacts and events are based in Tel Aviv and Jerusalem.
Orthodox Judaism, Islam and almost all of the Holy Land’s Christian churches adamantly oppose homosexuality, so it’s appropriate to be circumspect in religious neighbourhoods. There are no laws in Israel against homosexuality. Israel does not have gay marriage but does recognise gay and lesbian marriages performed abroad.