High-rise building with boundless swimming pool hand-painted

Quick answer：

This phrase describes a hand-painted image of a high-rise building featuring an expansive swimming pool. It could be a piece of art or a conceptual illustration. The term 'boundless' suggests an almost infinite size or an impression of vastness. In the context of architecture and design, it could be used to emphasize luxury and space. In art, it might evoke a sense of tranquility or opulence.