Beyond Brunelleschi: The Astronomical Secrets of the Cathedral

June 5, 2026

Visiting the Florence Duomo is a classic, but doing so during the summer solstice reveals one of the most extraordinary astronomical instruments ever created. Thanks to the intuition of Toscanelli and the subsequent precision of Leonardo Ximenes, the Cathedral transforms into a perfect solar observatory. The solar disk aligning precisely with the marble at the exact moment of the solstice is not just a visual spectacle, but a triumph of Renaissance geometry. At Itinerantour, we believe that the luxury of travel lies exactly in this: knowing how to choose the perfect moment and understanding the hidden history behind every ray of light. Make your stay in Florence unique and unforgettable. Choose your dates and book your private tour with Itinerantour here.