In recent years, Harvest Bible Chapel in Illinois has made large collaborative LEGO models a part of their week-long Vacation Bible Schools. I've previously noted their Noah's Ark and Solomon's Temple project. This year they once again did not disappoint, building a huge model of late Second Temple era Jerusalem. I'm pretty sure they drew heavily on the huge Holyland Model of Jerusalem, located at the Israel Museum, as you can see it on a TV screen in the background of one of the photos. The model shows key locations in the old city. That higher wall in the upper right would lead to Temple mount.
Casey was kind enough to provide a key. He designed both Herod's palace and Caiaphas' palace.