Versiunea română aici.
It’s not really worth it to go to Versailles by car from Paris (or from anywhere in Ile-de-France for that matter). The roads are always full and parking spaces near the castle are hard to find.
Your best bet is to leave your car at home/the hotel and take the RER (suburban train) C to Versailles. There are 3 railway stations in the city, but any of them will do, as they’re pretty close to each other. Just choose the one closer to your location.
The RER trains are not renowned for their safety, especially in the evening, so you should try to finish your visit before the night falls.
The restaurants from the Versailles domain (there are two of them I believe) are quite expensive. If you don’t want to leave the domain, you should pack some snacks or buy them from the cafeteria.
Outside the Court, like everywhere in France, you can find numerous small restaurants with excellent food and wine. If you are on a budget, you can order the “Menu du jour” (Menu of the day), which can cost you from 9 to 20 Euros (depending on the location). Service is usually included, but if you were particularly impressed, you can leave a 5-10% tip.
Well, that’s pretty obvious, isn’t it? After all, why would you go to Versailles if not to see the Versailles Castle and gardens? And if you’re wondering how much it will cost you, I can tell you that in march 2008, the prices were 13,5 euros for the main palace, 5 euros for the Trianon castle and gardens. The main gardens were free except in the evenings when there are water shows. Of course, there are reductions for kids and combined tickets (16 euros). Be ready for a 1 to 2 hours of queuing (in the low season).
The main castle is impressive at least. You go through the king’s, the queen’s and the children’s apartments, plus the world famous “Galerie des Glaces” (“The Hall of Mirrors”). Once a day, there is a special visit to see the “Royal suite”. In plus, there are many temporary exhibitions, but you have to buy a separate ticket for those. The order of the rooms is clear, there is no chance of getting lost. However, the constant crowding created by the groups is quite annoying.
In order to truly appreciate the gardens, you should visit them between April and September, while they’re still green. It’s still interesting in winter, but the earth and sand trails combined with rain are not fabulous for your shoes.
The only alternative I can think about is the Louvre Museum. If you don’t have the time or the disposition, try any of the Paris Museums + a walk in the city.