Royal Marines Museum, Portsmouth.

The Royal Marines Museum is housed on part of the former Eastney Royal Marines barracks at Southsea. The museum is housed in the former officers’ mess at the eastern end of the complex.
The exhibition is in three parts: the entrance floor has displays about the history of the Royal Marines, the floor below has a series of audio-visual displays about present-day training of RM recruits, and the top floor has more historical material relating to WWII, collections of medals, RM musical bands and also has the ornate function rooms.
The museum is linked to the Historic Dockyards and admission is included in the all-attractions ticket. I found my visit to the RM Museum far more interesting than I expected. Recommended.
Visit time: allow at least 2.5 hours if you want a good look at everything. There is a car park in front of the museum. Sat-nav may deliver you to the back of the former Eastney barracks – the entrance is on the sea front so if you can’t see the sea you are in the wrong place. 🙂
Southsea Castle and the D-Day museum are also in Southsea.