Basilica della Santa Casa
Another project was the Basilica della Santa Casa in Loreto. The church had not been built particularly well, with cracking vaults and an unstable foundation. Sangallo redesigned the church and shored up the foundations; Vasari claims the church to be ″the best that Antonio ever executed″ despite the challenges innate in rebuilding a church as opposed to building a new one from the ground up. Sangallo was also hired to do similar work on the Vatican loggias, which had shown signs of weakness due to poor construction; his reinforcements stand today.