Gibraltar is a breeze to explore. Ride the cable car up the Rock of Gibraltar...

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

Gibraltar is a breeze to explore. Ride the cable car up the Rock of Gibraltar for panoramic views and see the cheeky Barbary macaques. Later, grab a drink in Casemates Square or hunt for tax-free finds on Main Street. It is a simple day.