New answers tagged breslov
I'm uncertain what you mean by "pilgrimages" and if that includes any type of mass gathering at any place whatsoever. I see that you did limit it to Tishrei. So, the most "obvious" one I can think of is that numerous people gather at a body of water usually on the 1st day of Rosh Hashanna for Tashlich. If this was not your definition, please clarify this ...
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