Menora is one of the sacred symbols of Jewish religion. It has been searched for centuries( even at present). It is guessed that menora was brought to Constantinople or it came here in anyway. Jerusalem was the homeland of menora but it got lost in some periods.
According to a theory, menora had been in Constantinople for centuries. After the Latin invasion in Constantinople, it got lost forever. Crusaders might have taken menora to Europe and they hid it. Despite of its absence, it is still the most important sacred item of Jewish religion.
Istanbul (Constantinople at the past) might have hosted some sacred items. The sacred items have holy values so they never lose their values.
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