The ancient Romans relied heavily on the perfect weight distribution of the quarried stones placed in ornate arches. Any error in the distribution could have devastating consequences, so a perfect solution was vital. Channel the true genius of the ancient Roman architects to fit every piece into the Cathedral Door. Find the solution to this puzzle by removing the pieces from the frame and fitting them into their perfect placement. Difficulty 4 of 5. Measures 5.24 x 2.68 x 7.28 inches.