I've uploaded the default wallpaper for Linux Mint 18. Found myself wanting to have them on other desktops so here they are. All credit goes to the Linux Mint boys, they do such a good job.

The setting Desktop Wallpaper feature supports only for Linux Mint 17.X. and Ubuntu. api_key (Required) : Your API application key. See here for more details. date (Optional) : A specific date, ...