Plan to spend plenty of time here, and plan your visit ahead of time - you have to purchase tickets to enter the tombs at the entrance to the site, and your ticket allows entry to only certain tombs. If you want to enter Tutankhamen's tomb that requires a seperate ticket. Not all the tombs are the same - some are larger, some are better preserved, etc. They all have different features and attractions. Ask somebody to point out which are the better ones for you to visit. My recommendations are Ramses IV (# 9), Tuthmosis III (#34), and Siptah (#47). I thought Tutankhamun's tomb was worth the extra money, although not everybody agrees. If you're going to visit the Egyptia museum, you should definitely check out the tomb, as you won;t believe what they fit inside it!!! Also, Tutankhamen's body is still inside, in his sarcophagus.

The Valley of the Kings actually has two sections, the East Valley and the West Valley. The East Valley,in which most of the tombs of the New Kingdom Pharaohs can be found, is one of the most places visited by tourists. It consists of 62 tombs, which were arranged at first according to their dates of discovery, but after that they were geographically arranged.
The most known tombs are King Tutmosis I, Tutmosis III , Tut-Ankh-Amon, King Ramssess VI, King Mrenptah and AmonhotepII. The tomb of Tut-Ankh-Amun is famous as it was the only tomb found intact as it evidently had remained hidden until its discovery in 1922.
For Further Reading: http://www.memphistours.com/about-egypt/Valley-of-the-Kings.php

Eighteen kings are buried in The Valley of the Kings. A tram took us to the tombs. Each tomb consists of corridors that lead to many chambers. The Sarcophagus is usually in the inner room. The walls are decorated with the gods that were supposed to protect the deceased Pharaohs and paintings that depicted the journey to the afterward. Tutankhamen’s tomb is the most famous because it’s the most preserved one. Therefore, you should buy an extra ticket to visit it. In order to preserve the tombs photos are not allowed even the guide won’t be allowed to explain inside. The heat, the vast desert, the paintings of the gods, the hieroglyphic writing , and the sarcophagus take you back to the World of the Pharaohs.

The visitor's center has a great plan of the valley showing all of the tombs. When you bend down to look under the table you see the shape, length and size of the tomb. One of the best tombs is Ramses VI. It is not always open, but if it is go see it. King Tut's tomb is closed for restoration for an unknown time. Few people ever visit the Western Valley or the Valley of the Apes. Go there because it looks the way the Valley Of the Kings did long ago. One tomb is open there, the tomb of Ay who took over after Tut died. Well worth the side trip and not as touristy.

truly fascinated with this place because the tombs were caved in the mountains. it amazes me how such things are done. the hieroglyphs seem almost fresh like it was juz done because of all the colours. advisable to go to this place wen you are still young or rather healthy because it is very tiring to go into some of the tombs. especially the tomb of tuthmosis III, u have to climb up like a REALLY long flight of stairs then go thru from one room to another with flight of stairs gg down.