The programme, which goes on sale on March 18, features a range of seven and 14-night itineraries from Southampton between October 2020 and March 2021.
A series of "day into night" visits will enable passengers to take in nightlife with late departures from destinations such as Barcelona, Valencia, Tenerife and Fuerteventura.
Shore excursions include waterfall canyoning in Madeira, river rafting in Vigo, tuk tuk tours of Lisbon and stargazing from Mount Teide in Tenerife – Spain’s highest peak.
Traditional shrimp fishing by horseback in Bruges and cruising canals in Amsterdam on a vintage boat are also among other new city-based shore experiences from the line.
Ports of call in Spain, Portugal and the Canaries will include Cadiz, Fuerteventura, Gran Canaria, Lanzarote, Lisbon, Madeira, Tenerife, Alicante, Barcelona, Gibraltar, Malaga, Valencia and Vigo.
Rotterdam (for Amsterdam), Zeebrugge (for Bruges), and Hamburg are among the northern European cities featured.
Paul Ludlow, P&O Cruises president, said: “P&O Cruises is promising to deliver opportunities for guests to discover hidden secrets in these wonderful ports.
“We’ve used insider knowledge to develop shore visits and adventures that will be off the beaten track and give once-in-a-lifetime local experiences.
“P&O Cruises has a strong tradition of taking guests to enjoy winter sun and vibrant northern European cities, and now we’re helping them discover a new side of well-known destinations.
“By scheduling late departures for Iona from ports our guests will be able to make the most of days and evenings on shore, with an enviable selection of experiences that will showcase the very best of hidden Spain, Portugal and the Canary Islands and northern European cities.”
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