Restoring Angkor

With the exception of Angkor Wat, which was restored for use as a Buddhist shrine in the 16th century by the Khmer royalty, the temples of Angkor were left to the jungle for many centuries. The majority of temples are made of sandstone, which tends to dissolve when in prolonged contact with dampness. Bat droppings took their toll, as did sporadic pilfering of sculptures and cut stones. At some monuments, such as Ta Prohm, the jungle had stealthily waged an all-out invasion, and plant life could only be removed at great risk to the structures it now supported in its web of roots.

Initial attempts to clear Angkor under the aegis of the École Française d’Extrême-Orient were fraught with technical difficulties and theoretical disputes. On a technical front, the jungle tended to grow back as soon as it was cleared; on a theoretical front, scholars debated the extent to which temples should be restored and whether later additions, such as Buddha images in Hindu temples, should be removed.

It was not until the 1920s that a solution was found, known as anastylosis. This was the method the Dutch had used to restore Borobudur in Java. Put simply, it was a way of reconstructing monuments using the original materials and in keeping with the original form of the structure. New materials were permitted only where the originals could not be found, and were to be used discreetly. An example of this method can be seen on the causeway leading to the entrance of Angkor Wat, as the right-hand side was originally restored by the French.

The first major restoration job was carried out on Banteay Srei in 1930. It was deemed such a success that many more extensive restoration projects were undertaken elsewhere around Angkor, culminating in the massive Angkor Wat restoration in the 1960s. Large cranes and earth-moving machines were brought in, and the operation was backed by a veritable army of surveying equipment.

The Khmer Rouge victory and Cambodia’s subsequent slide into an intractable civil war resulted in far less damage to Angkor than many had assumed, as EFEO and Ministry of Culture teams had removed many of the statues from the temple sites for protection. Nevertheless, turmoil in Cambodia resulted in a long interruption of restoration work, allowing the jungle to resume its assault on the monuments. The illegal trade of objets d’art on the world art market has also been a major threat to Angkor, although it is the more remote sites that have been targeted recently. Angkor has been under the jurisdiction of the UN Educational Scientific and Cultural Organization (Unesco) since 1992 as a World Heritage Site, and international and local efforts continue to preserve and reconstruct the monuments. In a sign of real progress, Angkor was removed from Unesco’s endangered list in 2003.

Many of Angkor’s secrets remain to be discovered, as most of the work at the temples has concentrated on restoration efforts above ground rather than archaeological digs and surveys below. Underground is where the real story of Angkor and its people lies – the inscriptions on the temples give us only a partial picture of the gods to whom each structure was dedicated, and the kings who built them.

To learn more about Unesco’s activities at Angkor, visit For a great online photographic resource on the temples of Angkor, look no further than, a Japanese website with an English translation.