Koh Si Chang is a small island located in the Gulf of Thailand, near the city of Chonburi. It is known for its beautiful beaches, clear waters, and relaxed atmosphere, making it a popular destination for both locals and tourists. The island is easily accessible by ferry, which takes about 30 minutes from the mainland. The island has a rich history, having served as a royal retreat during the reign of King Rama V. Visitors can explore historical sites, such as the Phra Chudadhuj Palace, and enjoy outdoor activities like snorkeling and hiking. Koh Si Chang offers a peaceful escape from the hustle and bustle of city life.