| In 1487 Leonardo submitted designs for the proposed crossing tower (tiburio ) for Milan cathedral in competition with six other architects.Two sectional drawings of the dome show a design with double vaults,and there is a plan drawing of the octagonal tower showing the position of the buttresses | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Terry, Sheila |
| Bildgröße: | 5190 px × 3438 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |