Cambodia authorities have begun to enforce new entry tariffs for the first time in 25 years for the Angkor temples, which are on UNESCO's World Heritage list.
Angkor Enterprise, the government body that manages the entrance to the temple complex, raised the fee of a one-day ticket by 85 per cent, from $US20 ($27) to $US37 ($50).
A three-day pass will now cost $US62, up from $US40, and a weekly one $US72, up from $US60.
The organisation announced the new fees in August, with $US2 allocated from each ticket to the Kantha Bopha Children Hospitals Foundation.
The site, located in the northwestern town of Siem Reap, is Cambodia's main tourist attraction and is the biggest archeological complex in Southeast Asia, with temples constructed between 9th and 14th centuries.