Behold the many beautiful sights — and the striking works of art they inspired — along the Dutch waterways.

From glaciers capping volcanoes to Viking ruins coexisting with geothermal baths and geysers, the natural wonder of Iceland is revealed on this 8-night cruise round-trip Reykjavík aboard the deluxe World Traveller.

The romantic Douro River winds through northern Portugal, creating a landscape of sculpted hills and terraced vineyards. Embark on a 7-night cruise and sail from picturesque, medieval Barca d’Alva to Porto, a delightful mosaic of scarlet and gold architecture.