Mansion

"You and your team were instructed to rendezvous at a small warehouse before beginning your first training mission. However, when you arrive, you discover a whole different kind of welcoming party. Your communications are on the fritz, but your team is on the way. All you have to do is survive!"

- Combat Arms:Zombies map description

Trivia
Despite what one would assume, this map has nothing to do with Rural Estate.

This map is most similar to Training Grounds.