It's a grassy dome-shaped house with 2 pairs of doors in the front and back of the house. There are also 4 windows. Inside the house is a table where the Teletubbies have their Tubby Custard and Tubby Toast. There is also a control panel that has colourful buttons and levers that make animal noises and funny sounds when pressed or pulled. The control panel also contains the Tubby Sponges. There is a pink slide that the Teletubbies can go up and down. There are also 2 doors on each side of the entrances/exits of the house, but it is unknown what's inside them.
There are 4 beds that are the correct size and painted pink and blue and have gray blankets that the Teletubbies sleep in. There is a Tubby Custard Machine for making Tubby Custard and a Tubby Toaster for making Tubby Toast.
Noo-Noo is inside the house all the time. The Voice Trumpets rise inside and outside the house. The Magic Windmill is on a hill behind the house. There are flowers nearby the house. There are 2 paths that lead to two different hills: the right path leads to the hill with the Magic Windmill, the left path leads to The 'Scary' Hill, the place where the Teletubbies watch the Lion and Bear. There are a few other hills with trees on them
RebootIn the reboot, the outside almost remains the same but now has Flowers and lumps on it and the Doors and the Windows are yellow and the small tunnel leading to the doors is gone.There are now six windows instead of four, and the back door has been turned into a window inside the Tiddlytubbies play area. While the inside has been completely redesigned. It is no longer futuristic and made out of metal, instead, it is now Pink and Yellow and has White walls which seem to be made out of inflated material. The Slide is also gone which has been replaced with a lift called the Dup-Dup.
It also has a Grass Floor, four orange beds, and the Tubby Custard Machine has been redesigned into a train-like ride so that the Teletubbies can ride around Teletubbyland, even while drinking their Tubby Custard. In addition to this, it has a Tubby Phone and a playroom where the Tiddlytubbies play. These redesigned sets make the 2015 series seem less canon to the original series.
In 2007 the Tubbytronic Superdome has been dug up into a pond.