Although he's pretty much a beginner and claims he wants to do "something that won't end in death", I know (from 4 decades of experience) he'd deep down be insulted if I took him round something easy.
We've a bad track record of encouraging the other to do stupid stuff, therefore I reckon something like The Wall might be a good starting place for him. Anyone know what it's like in comparison to the Scottish centres? That sort of gives me something to go on.
Oh, and in case you think I'm being hard on a "beginner", I know that later that day he'll get his revenge by drinking me under the table (he always does) so I'm not going to feel guilty.