Build by me and 1 other guy it is quit a old build part of the project called Buildtheearth Where it can be visited on the server Buildtheearth.net in the Middle East region. I will not be adding a download due to this reason :)

Here's a bit of information about the palace:

Chehel Sotoon Palace is a palace in the Iranian city of Isfahan. The Palace's name directly translates to "forty columns," a reference to the 20 wooden columns that support the entrance.

Thanks to Waymer for the Render and helping me with the Columns