As cold snaps continue to keep travelers from summer days, a cruise to tropical locales can stave off cabin fever. While some are geared to soaking up the sun on the deck, others help avoid burnout by introducing guests to new adventure activities or relaxing spa treatments. These cruises will whisk travelers away from the day-to-day routine for a spring pick-me-up and an early start to warm, sunny days. Here are the best cruises to book this spring.

Crystal Symphony

The Life Spa and Salon on Crystal's Symphony and Serenity ships is fully equipped to bring its guests a voyage of relaxation and rejuvenation. State-of-the-art tools and trends like the quartz crystal treatment bed to reduce muscle tension and increase a sense of calm are just the beginning in the spacious, luxury spa. The balanced design and a wide range of treatment options from scrubs and facials to medical spa procedures, the spa has everything guests looking for a little TLC could ask for. Slip away from it all this spring and treat yourself to feeling renewed.

Tauck Norwegian Fjords Cruise

These small ship river cruises along the Danube and the Rhine--among other regions of Europe--offer a range of treatments like massages on the lower decks for a quieter environment. The larger ocean boats, such as the Norwegian Fjords cruise, partner with Sothys Paris to bring passengers a larger facility outfitted with thermal baths and a Turkish hammam. Exfoliate and invigorate the skin with a variety of treatments that will leave you feeling calm and refreshed for a new start after arriving back at port.

Seabourn Encore

To escape the cold weather – and unwind from post-holiday stress – take off to New Zealand. A nice change from reliable go-tos like Hawaii or the Caribbean, Seabourn offers a number of itineraries onboard the Encore that hit the must-see cities, allowing guests to relax and enjoy new scenery while forgetting the slowly thawing snow and ice at home.

Carnival Imagination

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Carnival Imagination #CarnivalImagination

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Again, escape cliche destinations and wander to the southern tip of Baja California Sur to discover the teeming Sea of Cortez during peak wildlife-viewing months. The temperatures are warm with mild evenings, and the tacs are guaranteed to be mouth-watering. Carnival offers cruises to La Paz, which is a quieter destination than Los Cabos, on the Imagination ship. An authentic city for exploring Mexican culture, La Paz is also a prime locale for adventure activities and learning more about the abundant marine life that call its oceans home.

UnCruise Adventures Columbia River Cruise

Dive deeper into on- and off-board adventure activities with itineraries by UnCruise Adventures. Observe whales and other wildlife or catch a yoga class at sunrise while on the small, 22- to 86-person ships. Guided kayaking, paddle boarding, snorkeling or even shoreline skiff exploration can be arranged in, or at least closer to, the water. Go hiking or horseback riding on shore, or visit local villages for interactions with locals to better understand the culture and traditions of your destination. No matter what activity selection guests choose, adventure is on the docket. Book the Columbia, Snake and Willamette Rivers cruise for a well-rounded week of adventure sports.

AdventureSmith Explorations Plancius Cruise

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A favorite specialist of adventure cruises, AdventureSmith Explorations is an ideal choice for more off-the-radar destinations such as exploring the Arctic on board the Plancius or Hondius ships. From whale-watching to spotting polar bears and gazing at the Northern Lights by night, these small ships help passengers see wildlife and nature in ways they otherwise could not while providing more time to take in the sights without harming the natural surroundings.