artistic legacy of Champa into seven artistic styles or phases of development. Six of the styles are represented at Mỹ Sơn, and two are believed to have originated from there. They are known as the Mỹ Sơn E1 Style and the Mỹ Sơn A1 Style. In particular the temple known as "A1" is often referred to as the architectural masterpiece of the Cham. The six styles of Cham architecture represented at Mỹ Sơn are the following: The style of Mỹ Sơn E1 and F1 dates to the 8th century AD. The temple known as "E1" is now ruined. The style which it established is represented today by two works of art that formerly belonged to the temple but today are housed in the Museum of Cham Sculpture in Da Nang: a pedestal and a tympanum. The style exemplified by My Son A2, C7 and F3 is similar to the style of Hòa Lai from the turn of the 9th century. The Đồng Dương style of the late 9th century is reflected in Mỹ Sơn A10, A11-13, B4, and B12. This style is named after the Vietnamese town that occupies the site of the 9th century city and Buddhist monastery of Indrapura. The archeological site of the monastery has been largely destroyed; French scholars of the early 20th century were able to create diagrams of its layout and the disposition of its buildings. Numerous striking works of sculpture belonging to this style survive in Vietnamese museums. The Mỹ Sơn A1 style of the 10th century is exemplified by Mỹ Sơn B5, B6, B7, B9, C1, C2, C5, D1, D2, and D4. It is the most heavily represented style at My Son, and is known for its elegance and grace. The style's namesake and most important architectural exemplar, the once magnificent tower known as "A1," is largely ruined. It is a mound of earth, surrounded by rubble and the outline of a wall, at the center of which stands a whitish pedestal. A scale model of the former temple created by Japanese researchers as well as a schematic frontal view are exhibited in the Museum of Cham Sculpture in Da Nang. The most striking of the remaining buildings belonging to the style may be the storehouse B5, which exemplifies the saddle-shaped roof peculiar to Cham artchitecture. The My Son A1 style is sometimes also known as the Tra Kieu Style, after the