▁Mos es ▁communic ated ▁with ▁God ▁during ▁the ▁Israel ites ' ▁travel s ▁in ▁the ▁desert . ▁ ▁Const ruction ▁O hel im ▁are ▁usually ▁simple ▁m ason ry ▁structures . ▁They ▁may ▁include ▁one ▁or ▁two ▁windows . ▁In ▁pre war ▁Poland , ▁the ▁o hel ▁of ▁a ▁Reb be ▁was ▁located ▁close ▁by ▁the ▁Has id ic ▁court , ▁and ▁was ▁big ▁enough ▁to ▁accommod ate ▁a ▁min yan ▁of ▁ten ▁men ▁beside ▁the ▁grave . ▁ ▁The ▁o hel ▁of ▁the ▁Lub av itch er ▁Reb bes ▁in ▁Queens , ▁New ▁York , ▁is ▁unusual ▁in ▁that ▁it ▁does ▁not ▁have ▁a ▁roof . ▁This ▁allows ▁k oh anim ▁to ▁visit ▁the ▁gra ves ▁without ▁coming ▁into ▁contact ▁with ▁imp urity ▁from ▁the ▁dead . ▁ ▁Use ▁In ▁the ▁case ▁of ▁a ▁Has id ic ▁Reb be , ▁the ▁o hel ▁is ▁a ▁place ▁for ▁visitors ▁to ▁pray , ▁med itate , ▁write ▁kv itel ach ▁( pet ition ary ▁prayer ▁notes ), ▁and ▁light ▁cand les ▁in ▁honor ▁of ▁the ▁dece ased . ▁O hel im ▁of ▁Has id ic ▁Reb bes , ▁as ▁well ▁as ▁the ▁tomb s ▁of ▁t z ad ik im ▁v ener ated ▁by ▁Mor oc can ▁Jews , ▁serve ▁as ▁year - round ▁pil gr image ▁sites , ▁with ▁the ▁biggest ▁infl ux ▁of ▁visitors ▁coming ▁on ▁the ▁Reb be ' s ▁or ▁t z ad ik ' s ▁Y om ▁Hill ula ▁( ann ivers ary ▁of ▁death ). ▁ ▁Notable ▁o