By Maureen O'Hare, CNN (CNN) — In our roundup of travel stories this week: A collapsing sandcastle that trapped a teenager, the Vatican Observatory where science meets religion, plus “invisible architecture” in the African desert.Sleeper trainsFew transport options capture romantic imaginations as completely as sleeper trains, those legendary locomotives that allow us to bed down
The post The trains that allow you to fall asleep in one world and…