Fodor's Expert Review Royal Citadel

This huge citadel was built by Charles II in 1666 and still operates as a military center. Tours of the installation must be booked via Eventbrite ( www.eventbrite.co.uk) at least 24 hours ahead of time. Meet at the Commando Memorial on Lambhay Hill to the north of the Citadel at 2 pm; tours last about two hours. Note that children under seven are not allowed, ID is required, and that only limited photography is permitted. There is no parking onsite and no toilet facilities.