The project is a Site Museum of Madain Saleh in Al-Ula, Saudi Arabia. It is a unique and rich city of architectural heritage and nature, a place that is described as an open-air museum. Madain Saleh, also known as Al-Hijr is the first inscribed World Heritage property in Saudi Arabia. It has a notable number of monumental tombs and decorated facades that date back to the 1st century BC to the 1st century AD. Along with many inscriptions, cave drawings, and water wells. The uniqueness of Madain Saleh comes from being the meeting point of the late Antiquity civilizations. As well as from its significance architecture and decorations that was cut into sandstone and still preserved. The site and its original function; as funerary architecture, is the driving force of the design. The proposed space program consists of archaeological museum, research, auditorium, entrance and administration, and outdoors zone. This study also proposed the best location at Madain Saleh as the project site location according to the site evaluation result. The aim of the project is to connect the bond between humans and nature, humans and the architectural spaces, and most importantly humans with themselves.