4K HD Wallpaper: Sand Castle
The Disney castle in a sand version can be admired in this 4K image which is completely free under CC0 license from Gregor's courtesy. Download if you like and use in your non-commercial (desktop backgrounds, homescreen phones) and commercial (blogs, apps, templates...) projects.
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x1536 (compatible with almost all tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many smartphones)