This summer, Silversea's award-winning all-suite Silver Shadow will set a course for one of the world's last great unspoiled frontiers: Alaska. From May through September, Silver Shadow will embark on 12 magnificent voyages, taking a privileged group of 382 travelers to explore a paradise of glaciers, rugged mountains and ancient forests.

The Alaska itineraries feature convenient round-trip or open-jaw departures from San Francisco, Seward and Vancouver. Ranging from seven to 12 days, these intriguing journeys will offer Silversea guests what others can only dream of €¦ breathtaking vistas from a base of floating luxury complemented by optional in-depth explorations ashore that extend the adventure in grand style.

"To capture the complete portrait of Alaska, we're offering an exciting collection of pre- and post-cruise land extensions of two to six nights that can easily fit most traveler's schedules and accommodate the varied interests of our guests," said Darius Mehta, Silversea's director of land programs. "These programs are carefully designed to showcase the region's rich cultural heritage, dramatic natural beauty and abundance of wildlife."

Except as otherwise indicated, the following optional land programs feature deluxe accommodations, all transportation, transfers, guided sightseeing and some meals. The package prices listed are for guests who purchase Silversea's optional air program.

** NEW FOR 2009: "Champion Alaskan Huskies" -- Meet champion dog musher Martin Buser who holds the record for the fastest time in the 1,049-mile Iditarod dogsled race. Visit his home and kennels to see a mushing demonstration, pet and cuddle the puppies, and learn about how he cares for his dogs on and off the trail. This two-night package offered from Seward is available at a starting promotional price of $295 per guest. It includes a city tour of Anchorage and accommodations at the Sheraton Anchorage Hotel. Meals and some transfers are additional.

** NEW FOR 2009: "Wilderness Retreat" -- Escape to two of Alaska's premier lodges, where awesome landscapes know no boundaries. At the remote and secluded Winter Lake Lodge, silently glide across the lake by canoe taking in the majestic sight of Trimble Glacier. Hike along gentle mountain trails and dine on the owner/chef's gourmet cuisine. Travel by floatplane to Talkeetna Lodge for spectacular views of famed Mount McKinley and excursions that take you floating down the Susitna River, in search of wildlife on a jetboating safari, and flying around North America's highest peak before touching down for an unforgettable glacier landing. This five-night package offered from Seward is priced from $4,995 per guest and includes a luxury railway transfer through the scenic mountain ranges of the Matanuska Valley.

** From Vancouver, "The Majestic Canadian Rockies" four-, five- or six-night program explores the breathtaking peaks and valleys of the Canadian Rockies from the comfort of your railcar. Enjoy two nights in Banff and visit the "Jewel of the Canadian Rockies" -- Lake Louise, set in a UNESCO World Heritage Site. Join the Rocky Mountaineer for a two-day journey by rail through the snow-capped Canadian Rockies, past the Continental Divide, the Spiral Tunnels and Kicking Horse Canyon to Kamloops for an overnight stay. Prices start from $3,195 per guest.