The Egyptian Museum in Cairo is one of the first stops on most people's itineraries when traveling to Egypt. With over 120,000 artifacts, the museum houses an incredible display depicting ancient Egypt's glorious reign. You can enjoy mummies, sarcophagi, pottery, jewelry and of course King Tutankhamen
's treasures. King Tut's goodies include his socks, underwear and the boy-king's death-mask made of solid gold, described as the most beautiful object ever made. The displays are not all labeled very well and it's a little haphazard but you'll enjoy it nevertheless.
The museum is open from 9am - 5pm daily. For more information on exhibits and virtual tours visit the Egyptian museum web site (it may still be under construction). For more information about visiting Cairo see my travel guide to Cairo.
Note: If you can't make it all the way to Cairo but you're interested in seeing some of Tutankhamun's treasures, an exhibit is currently on display at the Pacific Science Center in Seattle: "Tutankhamun and the Golden Age of the Pharaohs".