Pi Leh Bay is one among the foremost impressive sites on Koh Phi Phi Leh. Also known/spelled as Ao Pileh, Pileh Lagoon, Pileh Cove or Pi Ley Cove, it's like a canyon, almost cutting Koh Phi Phi Leh in two. Located on the eastern side of the island, a couple of hundred metres south of Viking Cave, it takes about half-hour for a long-tail boat to get there from Tonsai Bay, the most arrival/departure pier on Koh Phi Phi Don.

With a length of about 600m from its entrance to its end, this long, thin bay offers great snorkelling opportunities. Framed by 100m-tall limestone cliffs, it's within the shade most of the time, except between 11:00 and 13:00 - the simplest time to photograph the outstanding great thing about its emerald green water. At some spots, it even seems that the water is lighted from the bottom of the ocean , making it a spectacular sight to see. The western side of Pi Leh Bay features a couple of small beaches at the foot of the cliff, but most of the boats visiting it stay within the centre of the lagoon while their guests go swimming and snorkelling.