Why you should go: Spot polar bears and beluga whales. Sail past immense glaciers and thundering waterfalls. And get a glimpse of life below the ice with underwater cameras.

You'll spend a week sailing around Iceland and Greenland on a National Geographic ship built for exploration. There'll be scientists onboard giving lectures, a glass-bottom boat for side ventures, and an open-air observation lounge to watch the scenery and wildlife glide by.

What's the big deal? Travelzoo members can experience all this in June next year for £4799 per person. That saves £1966 on the regular price for the cruise alone. You'll also get free return flights.

Click the blue button for more information, or call 0800 098 1496 to book.