Simply stunning temple with superb views. the roads leading there from Siem Reap or Tbang Meanchey are excellent.
We loved it, the buildings are beautiful, though not as grand as most in Siem Reap, but the views are some of the best in Cambodia. It is now possible to drive to the top without any probs, or go in the back of a pick up, leaving only a gentle short walk (about 300m) to the temple base and then a easy walk up through the temples to the top.
The many Khmer army and police stationed there are very friendly and rightfully proud of their job looking after one of Cambodia's treasures.
Entrance is free, but you need to get a ticket at the bottom for which a passport or ID is required. Donations are appreciated.

I was been here 3 time first time in 2002 with my Japanese girl friend during still many land mind a rounding that location 2 time in 2011 and 3 time on 2012 it's very grate place best view from the hill top of mountain excellence landscape enjoyable with local people and food on the way good experience on deity road have fun you will never ever forget this view let's try it . . .
This is the the one of Khmer Hindu temple on the hill top of da^ngre^k mountain 525 meter(1,722ft)in 1962 lengthy dispute between Thailand and Cambodia over ownership, The international court of Justice awarded the temple to Cambodia,
Preah Vihear was constructed begining in early 11th century in the period under the reigns of King Suryavarman I (1002–1050) and King Suryavarman II (1113–1150). The inscription found at the temple provides detailed accounts of Suryavarman II studying sacred rituals, celebrating religious festivals and making gifts, including white parasols, golden bowls and elephants, to his spiritual mentor, the aged Brahman Divakarapandita. The Brahman himself took an interest in the temple, according to the inscription, by donating a golden statue of a dancing Shiva to temple collection.

I just came back from Cambodia, and use one day to visit this temple. (My hotel located in Siem Reap, I went to Preah Vihear as a day trip)

It will takes around 3.5hrs from Siem Reap to the ticket booth of Preah Vihear. Now the ticket is $5 per head. (but I find that a board read "$25 per a 6 ppl truck"). Your car need to stop at the ticket booth, then you will take a government car to carry on the travel. We no need to pass Thailand road as travel book suggested, instead, we travel on the new built road to the temple. The drive is really amazing, as the truck is open, we can taste the speed of the car, enjoy the view with no hindrance, as the road is quite steep, the feeling is comparable to a ride on roller coaster, except it is a real car. I think this journey is even more interesting than the temple itself.

The temple is in similar style to Angkor Wat, but the layout is different, it stretch from North to South. The cliff view close to the temple is really great, but the day we visit is very foggy, so our photos is not great.

We have lunch in the Soldiers' family camp, the food is not bad, besides, our tour guide Sophana cooked a dish for us~~

During the visit, the people there are quite curious about us, children will walk close to you and look at you.