During the Jewish festival of Passover, many museums and events will be free of charge. Try Jerusalem’s Gazelle Valley Park or Botanical gardens or Pharaoh Mania at the Bible Lands Museum. 40 Israeli museums have free entrance thanks to sponsorship from Bank Hapoalim.
https://www.itraveljerusalem.com/article/passover-events-in-jerusalem/
https://www.touristisrael.com/free-passover-museums-sites/5802/