The cathedral of Siena, in Italy’s Tuscany region, is renowned for its spectacular 14th-century mosaic floor. But due to its fragility, the masterpiece is protected from visitor foot traffic by fibreboard panels most of the year. For the next two weeks, however, visitors to the religious site will be able to get a rare view of the 56-panel marble floor in all its glory.

The Duomo di Siena was constructed in the first half of the 13th century and is one of the city’s most visited attractions. The interior is a cornucopia of artistic marvels, including works by Italian masters like Donatello, Michelangelo and Bernini. While these are on display year-round to visitors, the 1,300 square-metre marble floor is only uncovered for two short periods each year.