Expedia, claiming to be the world's leading online travel agency, has added what it calls a boutique election of new luxury and river cruise booking options to the company's cruise portfolio. Expedia.com now offers eight ocean cruise and three river cruise brands.

"The cruise industry offers a remarkable range of options. The traditional 'Love Boat'-style cruise from our youth is a thing of the past," said Joe Megibow, vice president and general manager, Expedia.com. "Today, if you spend even just a moment looking, you will find a cruise option that is tailored to your specific interest, taste, region and budget."

The luxury ocean cruise lines now offered by Expedia include: Azamara Club Cruises, Crystal Cruises, Oceania Cruises, Paul Gauguin Cruises, Regent Seven Sea Cruises, Seabourn, Silversea and Windstar Cruises.

Comprising some 28 ships, these lines offer cruises to destinations including the Mediterranean and Northern Europe in the summer and South America, the Arctic and the Caribbean in the winter.

River cruise options include Avalon Waterways, Uniworld Boutique River Cruise Collection and Viking River Cruises.

According to Megibow, because most major cities grew to prominence because of their proximity to waterways, river cruising has become a popular way to experience many of the world's greatest cities and regions in Europe, Asia and Egypt. River cruisers can walk right off the ship and into the center of town. All of the brands Expedia now offers include shore excursions at each of the stops on the river cruise itinerary. Expedia's river cruise offerings now feature 55 vessels.