Tzitz Eliezer on the Prohibition to Enter Mosques (26 Nisan)
שו"ת ציץ אליעזר יד:צא, יח:מז 26 Nisan 5748 (1988)
Can Jews enter places of worship of other religions? Can they walk the grounds of such places and/or use them as a place to view the surrounding countryside? Tzitz Eliezer's stringent view reminds us of issues that come when dealing with other religions, whether or not they qualify as formal avodah zarah, worship of powers other than Hashem.