Yes, a level 52 is able to get into Sunken Temple in World of Warcraft.
Currently in Mists of Pandaria, the latest expansion to World of Warcraft, there are 90 levels.
Outland is the area that was released with World of Warcraft: The Burning Crusade. It is for people who are level 58 or higher. It is effectively a whole new planet to explore and used to be known as Draenor, the home of the Draenei. Outland is where the Black Temple, home of Illidan Stormrage, is situated.
One can purchase max level World of Warcraft accounts from a site that offers the services of selling World of Warcraft accounts. One example includes "BuyMMOAccounts".
25
A level 60 raid.
?? boss
wetlands
Level 14
Level 65 is required in order to obtain and use the gunblade on World of Warcraft. The gunblade is dropped by monsters whom are in the mid-65 level range.
Tanaris
Outlands..Hellfire Peninsula
Incinerate can be learned at level 64.