They are similar to the long halls found in 10th century temples. As with the Suor Proat Temple towers, their exact function remains unknown. Some scholars take their modern name (khleang, means 'storehouse' in Khmer), as an indication that they housed the royal treasure. Others thought of them as reception halls for dignitaries, and some believed they were sanctuaries.
The South Khleang was left unfinished and is almost devoid of any decoration, but it displays pure architectural lines which are quite appealing. The building is entirely made of sandstone.
The absence of a central tower (one was added to the North Khleang Temple) keeps intact the impressive perspective offered by the 45-metre (150') long main room.