Gliding on an 82-foot zip line; scaling a 43-foot rock-climbing wall; or sprawling out 136 feet above the sea in a cantilevered whirlpool, Allure of the Seas’ guests will enjoy unique, bird’s-eye views as they sail into some of Europe’s most captivating cities. And having just emerged from an 18-day drydock revitalization, Royal Caribbean International’s Allure of the Seas is even better than ever. The ship that helped redefine cruise vacationing in the Caribbean, is delivering Europe’s must-see cities – such as Barcelona, Marseilles, Pisa and Rome – with a host of new restaurants, suites and staterooms, and name-brand boutiques that combine into an unmatched Europe adventure for the whole family.