Scotland in august!
 

I'm staying for 5 days, 16-21st. the only thing I have planned is being in Edinburgh friday night.

What can't I miss when going to Scotland?

I went to Scotland when I was really young, I have the faintest memories of it.. but I still remember the castles.. you have to check out the castles!

In August the military tatoos that are held at Edinburgh Castle are a highlight, as are any Highland Games you might find going on.

Edinburgh Castle is about the best castle in Britain. Edinburgh is a wonderful, walkable town - Royal Mile, etc. The various abbeys in the south including Rosslyn and Jedburgh are great. Deep Sea World if you have kids is a hoot (even for adults interested in an amazing aquarium). St. Andrews, Stirling and Loch Lomond are all worth a look in the south. Haven't been north yet, so I can't comment much on that. Go on a distillery tour, you learn more about scotch in a day than you would in a year anywhere else.