Keng Koo in Thonburi Palace, consists of twin residences in Chinese-style, which are together referred to as the Chinese-rooftop Twins.

The one above is known as Keng Koo Lek, i.e. the Lesser Chinese-rooftop Twin, the one on the right is known as Keng Koo Yai, i.e. the Big Chinese-rooftop Twin.