Themed cruises offer unique ways to travel the world

Grab a pool-side lounge chair. Order a pina colada. Sip. Rinse and repeat.

While relaxing, cruise vacations seemlingly offer little variety.

But there are a few cruises being offered now that really shake things up. Whether you need to let your inner rock god loose or prefer to gaze at celestial wonders, what’s happening on the open seas is far from ordinary.

Take a look at the gallery above for some of the most unique cruises that will soon be setting sail.