Edinburgh Castle, the Royal Mile, the National Museum. You already know about those (and we've written a full best museums guide covering all 15). If you want the itinerary version with all the big hitters, we've written a 5-day Edinburgh itinerary that covers them properly. This page is different. These are the things that don't make the generic top-ten lists but consistently get the highest Google ratings from the people who actually do them.
What you'll notice: Edinburgh's best-rated activities lean heavily toward experiences rather than sights. Escape rooms, chocolate tours, underground whisky tastings, guided walks. The kind of thing where someone's talking to you and you're doing something with your hands, not just looking at a plaque. That's partly because Edinburgh has been doing the heritage thing for centuries and the new generation of experience businesses has learned that people want to participate, not spectate.
A few of these are free (Arthur's Seat, Victoria Street, Dean Village). A few are niche enough that you'd never find them without a list like this. All of them hold a 4.9 or 5.0 Google rating, which in a city with as many tourist traps as Edinburgh, actually means something.