The Japanese Three Way House by Naf Architect & Design takes a bit of climbing and trekking to get around.

As a child, I yearned for a home made out of climbing obstacles but sadly, i just had my bunk bed. For the lucky owners of this adventurous dwelling, ladders are climbed in the morning instead of stairs. Japanese firm Naf Architect & Design designed a home in a neighborhood where old meshes with new.

This single-family home looks rather average from the outside, but once inside it's mind-blowing to see the ample space that's offered. Certain areas have climbing walls, while other levels are connected with a ladder -- there's even one that leads directly up to the spacious rooftop terrace. There's no need to go to the gym with the Three Way House, as the rock-climbing wall will provide plenty of exercise.