A fragment of masonry fell from on the church’s walls and hit a visitor, identified as 52-year-old Daniel Testor Schnell of Barcelona, on Thursday afternoon.
Other visitors were swiftly escorted out of the church and it has been closed to the public ever since. It will remain off-limits until authorities are sure it is safe.
Florence’s authorities have opened an investigation into the accident, which consumer rights watchdog Codacons described as “an unacceptable incident”.