World Heritage List
The World Heritage List is a list of sites that are recognised by UNESCO for their historic, scientific, cultural or other significance. Once a site becomes part of this list, it will be demarcated by UNESCO as a protected site.
The list is not permanent as the sites in it can be downgraded or even deleted entirely based on the UNESCOs recommendations. Some of the sites can be placed on the in-danger list when they lack the required maintenance. The World Heritage Committee has recently agreed not to place the Great Barrier Reef in in-danger list despite it currently suffering from the brunt of the climate change.