What were the feasts that were mandatory pilgrimages for Jews?

The three mandatory pilgrimage feasts for Jews, known as the "Shalosh Regalim," are Passover (Pesach), Shavuot, and Sukkot. During these festivals, Jewish men were required to travel to the Temple in Jerusalem to present offerings and participate in communal worship. Passover commemorates the Exodus from Egypt, Shavuot celebrates the giving of the Torah at Mount Sinai, and Sukkot marks the harvest and the Israelites' wanderings in the desert. These pilgrimages fostered community and religious unity among the Jewish people.