5. White Sands National Monument, New Mexico, USA

White Sands National Monument, New Mexico, USA

Stretching for 275 miles of the New Mexico desert, the planet's largest gypsum dune field is not only a stunning - and glistening - background for show-off selfies, it's a place where surf-mad dudes and babes can enjoy a helluva ride on the slopes without a hungry shark in sight.

Zhangye Danxia Mountains, China