4.
Indoor-to-Outdoor Hot Tub
Before going into the last 3 and the coolest things on the list we definitely wanted you to check out this amazing feature, created for those who have a thing for hot tubs.
The idea is to create a hot tub that expands both outdoor and indoor, a room partially covered that is great for high and awesome for the hot days where you want to chill and relax under the shade.
The design features a hot tub that expands from inside the house to a balcony transformed to fit the second part of the hot tub, the outdoor one.
So, grab a towel and prepare to soak up because this hot tub is the coolest thing you million dollar dream mansion has to have.
