Lost items at Sacré Coeur can be reported to the Lost and Found Office, located near the main entrance. Visitors should provide a detailed description of the item(s) lost, including the location where it was last seen. Items may be claimed with valid identification. Unclaimed items are kept for two months before being disposed of or donated to charity. For more information about lost items at Sacré Coeur, visitors can contact the Lost and Found Office directly by phone or email.