The City of David organization has revitalized the Valley of Hennom, on the outskirts of Jerusalem into a brand-new park. The valley is mentioned in in the Book of Joshua and is said to be the origin for the concept of hell.  Israelis transformed it, just as they did to the once desolate Land of Israel.

https://unitedwithisrael.org/watch-israelis-turn-hell-into-heaven/