South Khleang is an impressive sandstone building located on the eastern side of the Royal Square in Angkor Thom, behind the Prasat Suor Prat towers. Built under King Suryavarman I in the early 11th century, it nearly mirrors the adjacent North Khleang. 'Khleang' means 'storehouse' in Khmer, though its actual function remains debated. Theories suggest it may have served as a reception hall for royal guests or a temporary palace. The building features baluster windows that are among the earliest examples of this style in Angkor.