Temples of Karnak. Walk along the Avenue of Sphinx to enter the complex as your guide explains how the massive facade was constructed. On entering the Temples of Karnak you will see each legacy left by the various pharaohs as the complex grew even larger. The deeper you go into the complex, the further back in time you will travel, with the oldest ruins dating back over 3,000 years. Walking through the Great Court into the Great Hypostyle Hall, it's hard not to be overwhelmed by the 134 columns towering above you like an ancient forest. At the rear of the complex you will find the sacred lake where centuries ago pharaohs and their offerings to the gods were purified. After a tour of the complex, you will have additional free time to explore at leisure.