There are various military and regimental museums in the castle, after the first few it grew a bit tiring, but if you have an interest in that sort of thing, it's probably more interesting. The prisoners area was more generic, and very interesting.
The views from the castle ramparts are stunning, although it was very cold. As it was Good Friday, the cannon wasn't fired at one pm, which we'd been looking forward to seeing.
Due to numbers it was hard to see the Royal jewels.
On a day with good weather, you can probably send more time within the castle, sat admiring the view, but it was too cold to stay still for long.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.