This unique guided tour includes a "behind-the-scenes" visit to the Cathedral's world-renowned Textile Conservation Lab, which conserves tapestries, needlepoint, upholstery, costumes, and other textiles. Particular focus will be the Barberini collection of the Life of Christ tapestries and the Acts of the Apostles tapestries, based on cartoons by Raphael. Must be 12 years of age or older. Tickets are $25 per person, $20 per student/senior.