If you find yourself in Rotterdam, there's a strong chance you've arrived by water. This popular port city (the second largest in the Netherlands) has gone through an architectural renaissance since World War II, with daring, innovative structures dotting the city (cube houses!) and defining its skyline. Café culture is on the rise here, so grab yourself a table and a cup.

There's more than meets the eye in Savona, a Northwest Italy port city many cruise ship passengers are lucky enough to find themselves in. The giant Fortezza del Priamàr looms over the water, providing a unique welcome. Be sure to stroll through the city's genteel, impressive medieval center, visit the beautiful Savona Cathedral and see marvelous artistic works from centuries past at the Ceramics Museum.

Nuuk, the vibrant capital of Greenland, offers a unique blend of Arctic beauty and modern living. Nestled between picturesque fjords and surrounded by rugged mountains, Nuuk is the gateway to exploring Greenland’s stunning natural landscapes. The city’s old harbor, with its colorful wooden houses, provides a charming introduction to Greenlandic culture and history. This area is perfect for leisurely strolls and offers striking views of the surrounding mountains and sea.

Tralee is the county town of Kerry, set between Tralee Bay and the foothills of the Dingle Peninsula in southwest Ireland.

Portimao is a port city on the southern coast of Portugal and offers easy access to some of the country's best beaches.