Gathering - Laser Cutting

I want a open air bathing spa which has interlocking spaces (such as spaces made when observing noobs play in tetris) with the outside but must also not be exposed in terms of privacy. The interlocking spaces must be clearly established in the structure of the building. The spa does not have to be on the roof floor but it cannot be on the first floor.

The dominant material is concrete or stone, which should give similar appeal as the baths above.

Changing rooms and toilets are essentials to the facility.

The idea of a cantilevered spa is recommended but not compulsory