With that view it can get even more amusing when you consider that it was first conquered by the latin empire during the 4th crusade and converted into a cathol

With that view it can get even more amusing when you consider that it was first conquered by the latin empire during the 4th crusade and converted into a catholic church, and then back into an orthodox church about 60 years after, and then finally into a mosque about 200 years after! As for an interfaith building, it's an interesting thought. There might be issues with ceremonies such as weddings, funerals, and events. There is the Abrahamic Family House in Abu Dhabi, but it's not a single building. I thought something like this might exist in Jerusalem, but I couldn't find any..