Aberdeen, Scotland, United Kingdom
Lerwick, United Kingdom
I spent my 21st birthday in Belize, on one of the cays on the barrier reef. After a day of scuba diving with some fantastic friends, we lay out on the dock watching the stars, and saw the international space station fly overhead.
Bring your own packed lunch and flask of tea if you're joining an organised tour for a day. You won't need to spend time queuing at the cafe when you could be looking at the attractions, and it often gets quieter around 1pm as groups go for lunch.