When choosing art for a healthcare setting, it's best to choose imagery that aligns with Evidence-Based Art research. One of the elements known to improve medical outcomes by reducing stress is water.
Studies have shown in particular that images of calm, slowly-moving water can have a significant stress-reducing effect on the viewer. The research recommends avoiding dangerous-looking rapids or stormy seas, as these can sometimes increase anxiety rather than alleviating it.
I've spent several years building up a collection of images specifically intended for use in healthcare settings. If you visit the Art For Healthcare gallery on my website, you will see streams, lakes, waterfalls and other water featured prominently in many of the images.
Please take a moment to learn more about the work I am doing to bring soothing art into healthcare settings, and to add your support through my Patreon page.