Mu Ko Angthong National Park consists of 42 islands. Its main islands are Phaluai Island, Wua Chio Island, Wua Talap Island, Mae Ko Island.

Angthong, translates as 'golden bowl', occupies almost 250 sq km and includes 50 sq km of limestone islands and karsts topography which rise from the sea as dramatic rock cliffs and bizarre rock formations. Caves, hidden lagoons and white sand beaches are there to be explored, kayaking and snorkelling among the shallow coral gardens makes a popular and fascinating day trip.

All of the islands are close to each other making a breathtaking panorama sailing around the park. All the islands are of different sizes and shapes. Most of them are covered with tropical forests and named after their distinguishing geography, a kind of descriptive appellation, such as 'Sleeping Cow Island' and 'Three Pillar Island'

Mae Ko (Mother Island) is a must to visit. Here, an emerald seawater lake in the middle of the island is encircled on all sides by limestone cliffs, but linked by an underground tunnel connecting with the sea. Reaching the lake entails a short climb of 10 minutes or so, but is rewarded with a spectacular view across the whole park.

Most of the islands consists of limestone mountains about 10-400 meters above sea level. Because the limestone can change its structure easily by both chemical condition and weather, the islands have many, strange-looking caves and cliffs, and some islands look like ancient Angkor Wat in Cambodia and Prasart Hin Pimai.