This is an absolute must-visit for its history and its state of preservation. We took the tour with Katherine, who was a superb tour guide, effortlessly walking us through the vessel from hull to captain's quarters, explaining the Cutty Sark's name, history, construction, lifespan, and illuminating sailors' life on board for us.
Even without the tour, there is enough clever explanation throughout that you get the feeling of how it would have been to be on board.
The lower floor has a spacious and airy café for a bite to eat, as you will want to really linger and explore the ship.