@PamMoran points us to this amazing article and collection of images about Scotland's "Garden of Cosmic Speculation."
The garden is in Dumfries in South West Scotland. According to Wikipedia "The garden is inspired by science and mathematics, with sculptures and landscaping on these themes, such as Black Holes and Fractals. The garden is not abundant with plants, but sets mathematical formulae and scientific phenomenae in a setting which elegantly combines natural features and artificial symmetry and curves. It is probably unique among gardens, and contrasts nicely with the historical and philosophical themes of the less spectacular but equally thoughtful Little Sparta."
[Design.org "A Garden of Cosmic Speculation: Where Science Meets Landscape Sculpture"]