Galleria prospettica del Borromini

This guide to the Galleria Prospettica in Rome introduces Francesco Borromini's 1653 corridor for Cardinal Bernardino Spada, a colonnade that reads as forty meters long but is only nine. It follows how far the illusion extends, including a small stone soldier placed at the far end and the stone bushes Borromini carved himself rather than trust a gardener with real plants.