From Wikipedia: http://en.wikipedia.org/wiki/Karnak
The Karnak Temple Complex, commonly known as Karnak (/kɑːr.næk/), comprises a vast mix of decayed temples, chapels, pylons, and other buildings. Building at the complex began during the reign of Senusret I in the Middle Kingdom and continued into the Ptolemaic period, although most of the extant buildings date from the New Kingdom. The area around Karnak was the ancient Egyptian Ipet-isut ("The Most Selected of Places") and the main place of worship of the eighteenth dynasty Theban Triad with the god Amun as its head. It is part of the monumental city of Thebes. The Karnak complex gives its name to the nearby, and partly surrounded, modern village of El-Karnak, 2.5 kilometres (1.6 miles) north of Luxor.
Part of the Holy Land, Egypt offers a fascinating mixture of ancient pyramids, temples and other religious monuments. There are numerous possibilities to explore Egypt from desert treks to trips down the Nile or scuba diving in the Red Sea and along the Sinai coast. Cairo, which means “The Triumphant”, is home to the pyramids, sphinx and over 17 million residents within its metropolitan area. Luxor is often described as the world’s largest open air museum, built on the ancient city of Thebes. The Karnak temple complex, located near Luxor, is a collection of ancient temples, chapels and various other buildings.