In 2007, local residents of Macao wrote a letter to UNESCO complaining about construction projects around the World Heritage Site Guia Lighthouse (Focal height 108 meters), including the headquarter of the Macau Liaison Office (91 meters).
In 2007, locals in Macao sent a letter to UNESCO voicing their objections to building projects around the World Heritage Site Guia Lighthouse (with a focal height of 108 meters) and the Macau Liaison Office headquarters (measuring 91 meters).