Gibraltar is a breeze for independent explorers. Head up the Rock for legendary...

https://www.herotraveler.com/abdullah-undefined1/story/why-gibraltar-is-one-of-the-best-cruise-ports-in-the-mediterranean

Gibraltar is a breeze for independent explorers. Head up the Rock for legendary views and meet the cheeky Barbary macaques. Afterward, wander Main Street to enjoy the British charm or grab a cold pint in Casemates Square. It is a fun, easy day.