Transboundary

Transboundary sites may occur where the features of a site span international boundaries. Transboundary nominations are inscribed as a single property on the World Heritage List, and require joint nomination by the States Parties involved.”

According to the Operational Guidelines, paragraph 134 regarding transboundary properties, 'A nominated property may occur:

1. on the territory of a single State Party, or
2. on the territory of all concerned States Parties having adjacent borders (transboundary property).'

Source(s):

Operational Guidelines for the Implementation of the World Heritage Convention

Assessing Marine World Heritage from an Ecosystem Perspective