The National Register of Historic Places, overseen by the National Park Service, is the nation's official list of districts, sites, buildings, structures, and objects worthy of preservation, and are officially designated "historic properties" regardless of whether they are archaeological or historic. To be eligible for listing, a property must meet one of four criteria and have sufficient integrity. Being listed on or eligible for listing on the National Register does not automatically prevent damage or destruction but it qualifies these approved properties for grants, loans, and tax incentives.