The Mrigadayavan Palace, built in 1924 between the beach towns of Cha-Am and Hua Hin, was the summer house of King Vajiravudh, who ruled until 1925. To prevent coastal erosion and protect this cultural landmark, The Marine Department of Thailand (Ministry of Transport) constructed groins, seawalls, and jetties along the beach near the palace. These rigid structures cost USD 8.4 million in subsidies. 

National experts, partners, and the Biodiversity Finance Initiative (BIOFIN) of the United Nations Development Programme (UNDP) measured the impact of subsidies on ecosystems in Thailand. After the team found that rigid coastal structures had accelerated erosion instead of preventing it, they presented these results to the Department of Marine and Coastal Resources (Ministry of Natural Resources and Environment).  

As a result, the Thai cabinet ceased subsidies for coastal rigid structures near the palace. Existing structures were replaced with nature-based solutions, restoring the ecosystem and protecting cultural heritage.