I’m currently reading Burago, Burago, Ivanov’s book *A Course in Metric Geometry*. I’m really enjoying it so far - what would be a good continuation to the book once I’m done?



Textbook recommendation: Metric Geometry
As you have been reading Loh's book, I recommend you take a look at *Metric spaces of non-positive curvature* by M. Bridson and A. Häfliger.


See also [An invitation to Alexandrov geometry: CAT(0) spaces](https://anton-petrunin.github.io/invitation/) by S. Alexander, V. Kapovitch and A. Petrunin, or its [older version](https://arxiv.org/abs/1701.03483/).


