The Temple of Karnak is actually three main temples, smaller enclosed temples, and several outer temples. This vast complex was built and enlarged over a thirteen hundred year period. The three main temples of Mut, Monthu and Amun are enclosed by enormous brick walls. The Open Air Museum is located to the north of the first courtyard, across from the Sacred Lake. The main complex, The Temple of Amun, is situated in the center of the entire complex. The Temple of Monthu is to the north of the Temple of Amun, while the Temple of Mut is to the south.
The Hypostyle Hall is found after passing through the Second Pylon. The hall is considered to be one of the world's greatest architectural masterpieces. Construction began during Ramesses I's reign. He was the king who founded the Nineteenth Dynasty and was king for only one year. The work continued under Seti I (1306 - 1290 BC). Seti I also built the Temple of Abydos and many other temples. The hall was completed by Seti's son, Ramesses II.The light that was allowed in originally kept most of the hall in shadows.
The hall ceiling was 82 feet high and was supported by 12 papyrus columns. The columns are made of sandstone and set in two rows of six. Each row is flanked on either side by 7 rows of columns that are 42 feet (12.8m) high. Each row has 9 columns, however the inner rows have 7 columns. The reliefs throughout the hall contain symbolism of Creation. The reliefs in the northern half are from the time period of Seti I and are obviously better done than those done by his son Ramesses II, which are in the southern half. Ramesses II's reliefs are cut much deeper than those of Seti's. This gives a much more dramatic light and shadow effect.