Durnstein, Austria
Photo: Durnstein, Austria / iStock / bluejayphoto

You were younger than everyone by 20-30 years.

U by Uniworld targets travelers aged 21 to 45 with 120-passenger sailings designed for a younger audience. Think: A rooftop bar and lounge, a coffee bar, mixology and cooking classes, and DJ dance parties. The excursions follow suit—with bar-hopping in Paris or biking through Austria’s wine country.