DK's Tree House

Donkey Kong's Treehouse is Donkey Kong's place of residence, and it is obviously also a treehouse.

Donkey Kong Country
Donkey Kong's Treehouse first appears in Donkey Kong Country, in which it is the starting point of the game. The house is rather nice, with a picture of sailing boats on the wall and a vase of flowers on a nearby table. As one would expect, there is a large amount of bananas in the house, and a picture of Candy Kong can also be seen in the house behind a tire.

In the Game Boy Advance version, the treehouse is redesigned and has a photograph inside it. Unlike the Super Nintendo and Game Boy Color versions of Donkey Kong Country, the Kongs can only collect the Extra Life Balloon once in the entire game instead of it reappearing after each time the Kongs enter the treehouse.

Donkey Kong 64
Donkey Kong's Treehouse next appears in Donkey Kong 64 where it is, once again, the starting point of the game.

In this game, Donkey Kong's treehouse has many differences compared to the one in Donkey Kong Country. Instead of a bed, this treehouse has a hammock. It also has much memorabilia in it, such as Cranky Kong's phonograph from Donkey Kong Country and a red girder from the original Donkey Kong arcade game. The treehouse also has several barrels and crates in it, along with old banana peels.

Donkey Kong Country Returns
Donkey Kong's Treehouse reappears in Donkey Kong Country Returns and Donkey Kong Country Returns 3D after a long absence from the Donkey Kong series. As in the previous games, it serves as the starting point. Constantly when the level starts, inside, the Kongs must repeatedly punch the Kalimba tiki until it is knocked out of the house (as it earlier tried to hypnotize Donkey Kong, to no avail). The treehouse has slightly maintained the furniture from Donkey Kong 64, such as the boombox, hammock, and several barrels. It also has two of Donkey Kong's ties hanging from the ceiling, two picture frames, and a television which shows the game's title screen (as well as playing the respective music) if activated by ground pounding (In Donkey Kong Country Returns 3D, what appears to be the Japanese version's title screen is shown instead). As in the Game Boy Advance version of Donkey Kong Country, the Kongs can also collect an Extra Life Balloon once for the entire game.

Donkey Kong Country television series
Donkey Kong's Treehouse also appears in the Donkey Kong Country television series, where it is relatively unchanged.

Mario vs. Donkey Kong
In Mario vs. Donkey Kong, the treehouse makes a brief appearance in the prologue of the game, when Donkey Kong is channel-surfing and stumbles upon a commercial with Mini Marios.

Mario Party 7
In Mario Party 7, the Treehouse can also be seen in the background of the DK minigames Jump, Man and Vine Country when players reach the top of the jungle.

Yoshi's Island DS
Donkey Kong's treehouse makes a small cameo in the intro of Yoshi's Island DS where the Toadies captures him from.

Mario Kart 7
The Treehouse reappears in Mario Kart 7, in the background of the course DK Jungle. Its appearance is the same as in Donkey Kong Country Returns.

Trivia

 * Early screenshots of Donkey Kong 64 showed that there was going to be a shower stall in Donkey Kong's Treehouse with a poster of Banjo and Kazooie on it. The shower and posters were later removed in the final version of the game.
 * In the Game Boy Advance remake of Donkey Kong Country, after defeating Really Gnawty, when Donkey Kong and Diddy Kong enter DK's treehouse, they will find Very Gnawty inside. The beaver then turns around shocked at the sight of DK and runs past him out the door.
 * In the Super Nintendo Entertainment System and Game Boy Color versions of Donkey Kong Country, the treehouse can only be entered once per when the Kongs play the level. This was removed in the Game Boy Advance remake of Donkey Kong Country.