8Haad Rin, Thailand

Haad Rin is best known for its Full Moon Parties, attracting thousands of tourists each month to Koh Phangan.

While the beach itself is stunning, the parties have caused extensive damage. The massive crowds leave behind piles of trash, including plastic waste, which ends up in the ocean. Noise pollution and heavy drinking also detract from the beach’s natural beauty. Once a quiet paradise, Haad Rin is now a party hub that has lost much of its charm due to over-tourism.