This futuristic 'tree house' building looks like a giant Jenga game

Living in a treehouse sounds like a childhood fantasy.

But architecture firm Rogers Stirk Harbour + Partners' new apartment building design, called the "Tree House," captures that floating, playful aesthetic. Made from locally-sourced timber, each stacked "apartment box" looks like a house that could sit in a tree. And layered garden patios throughout the structure would hold trees and other greenery.

On July 5, the concept was named as a nominee in the experimental award category at the World Architecture Festival.

According to the design, the Tree House would feature apartment boxes that could be stacked 10 stories high. Some units would jut out from the side - making the tower look like a giant Jenga game. The building's structure is designed to be made in low-tech factories.

Each apartment in the tower would be comprised of four boxes, measuring a total of about 805-square-feet, though the layouts would be flexible. Each unit would be able to access communal or private gardens, built on the roof of the box below. The ground floor would have an open layout with cafés to encourage interaction between the residents, the firm says in a statement.

The British firm imagines the Tree House as low-cost housing that can be rapidly assembled and easily adapted to different locations. The design is practical, but the building evokes a certain childlike wonder.

Rogers Stirk Harbour + Partners, which is known for its futuristic buildings, also won the sustainability prize for its Skyfarm design at the Architectural Review Future Projects Awards in March.