This is a photo of Central Perk, the coffee house under Joey, Monica and Chandler's apartment. The gang can usually be seen sitting on the couch sipping coffee. Both Joey and Rachel worked here at one point. This set is never taken down as it is used in almost every single episode.

This is almost all of Monica and Chandler's apartment. This set is also never taken down due to the fact it too is used in every episode. Monica has lived in the apartment the whole series while Chandler only moved in during the 6th season after dating Monica. Rachel moved out and lived with Joey for a while and finally moved in with Ross in season 8.

Another view of Chandler and Monica's apartment

This is a small portion of Joey's apartment. It was shared with Chandler until season 6, when he moved in with his girlfriend Monica. Shortly after he found a roommate and soon after Rachel moved in but left to live with Ross in season 8. Since then Joey has lived alone. This set is put up only when it is needed as it is isn't in all the episodes.

Another view of Joey and Rachel's apartment.

Yet another view of Joey and Rachel's apartment.

This is a piccy of the menu board outside Central Perk:)

An outside view of Chadler, Monica, Joey and Rachel's apartment building.