Beng Mealea is one of the most mysterious temples at Angkor in Cambodia. The temple lays in ruins, mostly unrestored, and the jungle has taken over it (hence also known as the "Jungle Temple"). It is not mentioned in any of the Khmer inscriptions despite its large size, but it is considered to be built in the early 12th century. The temple is located about 77 Km northwest of Siem Reap.

The Beng Mealea temple complex is on the UNESCO World Heritage Tentative List.

Koh Ker was a major temple group and the capital of the Khmer empire from 928 to 944 CE. The ruins of the abandoned Koh Ker are located in the jungle in Northern Cambodia, 120 kilometers away from another famous Khmer temple complex - Angkor. The Koh Ker Ruins feature several Hindu temples, the most important one being a 7-tiered pyramid. The temple complex was added recently (2023) to the UNESCO World Heritage List.