1. The Swimming Pool Indoor
Creating an underground indoor swimming pool is one of the most comfortable things you will ever do with a cellar. This way, you are assured that you will never get a sunburn bathing in your tub. The obvious drawbacks of having an indoor swimming pool are that it can be climate regulated, meaning that you can go swimming even in the middle of winter. There is also no risk that the neighbors would be able to peer over the fence to see you in your bikini.
However, this will not be practicable in areas with a high water table. Only by specific geographical locations can you build an underground swimming pool. And it is outrageously costly, of course. According to the Home Adviser, construction of a pool in your basement will cost between $20,000 and $100,000.
