Just four at a time, visitors soon will be allowed access to a long-hidden space inside Florence's Medici Chapel where delicate charcoal drawings sketched on the walls have been attributed by some experts to Michelangelo.
The secret room — a tiny 10-by-3 meters (33-by-10 feet) space — was discovered in 1975, when officials were searching for a new exit from the Medici Chapel to accommodate increasing visitors.
