Google has announced that they will shutting down panoramic photo sharing site Panoramio, along with its API on November 4th. Originally the company had announced plans for the shut down back in 2014 but due to strong community feedback they postponed those plans until users had viable options.
The stock photo site Unsplash recently launched APIs that grant users access to the site's entire library of over 30,000 high quality images. The API comes in two flavors: Unsplash Source and an entire JSON API. Unsplash launched a few years ago as a basic Tumblr blog.