In order to get around strict city zoning regulations that forbid new structures from putting neighbors in the shade for more than two hours a day, architecture firm MVRDV devised a tower that twists upon itself to the point of seeming as if it could snap and fall over at any time. The twist creates an ultra-narrow profile right at the section of the building that would cast a shadow on nearby buildings.

From certain angles, it seems like chunks of the Hochhaus Tower have been taken right out near the base in a Jenga-like effect. Not only does this mean the bottom ten floors won’t cut off sunlight, it also routes strong winds away from the building’s plaza.

The twisting floors have outdoor terraces, while the rest feature glazed walls and 12-foot ceilings for sweeping views of Vienna and lots of natural daylight. The steel and glass facade will also have operable windows and full-height French doors.

Designed to be multifunctional for residential units, offices or other businesses, the Hochhaus Tower won three-stage international competition. Construction will begin in 2016, with an expected completion date of 2018.

Explore the seemingly endless platforms and hidden nooks of this Jenga-like house, conceived as an example of “ultimate wooden architecture” by Sou Fujimoto Architects. Located in Kumamoto, Japan, ‘Final Wooden House’ consists of massive wooden blocks randomly stacked together with irregularly shaped openings covered in glass.

The architects were inspired by primitive conditions before architecture, like cave dwellings, where humans made the most of the surroundings as they found them.

Forget conventional rooms and staircases – this home is like a massive playhouse, requiring the inhabitants to climb from one block to another. The wooden blocks offer all manner of supports for various activities, but you’ll have to use your imagination to determine just how to use each one.

Of course, climbing around inside this minimalist jungle gym requires care, an able body, and perhaps a hard hat. Getting from one area to another in the dark might be an intimidating task. The house may not be terribly practical, but what it lacks in livability, it makes up for in pure fun.