Perched on the ragged southern edge of Argentina, where the snow-capped Andes fall away into the churning sea, Ushuaia has a frontier town feel to it, and serves as the base for expeditions into the icy waters of Antarctica.

Antarctica is the world’s last great wilderness, an alien landscape of snow-covered mountains, jagged icebergs and extraordinary wildlife. March is too late to see penguin chicks, and temperatures are getting colder, but it’s a great time to spot whales, with species including humpback, sperm and orca. Expedition trips will spend time exploring the Antarctic Peninsula, making several landings at various sites and cruising through scenic channels.

Named after the elephant seals that live along the coast, Elephant Island is synonymous with the early days of Antarctic exploration. It was here that Ernest Shackleton and his men were stranded for four months, and a monument to their bravery now stands on the island, often surrounded by Gentoo penguins.

Remote and virtually uninhabited, the island of South Georgia is a beautiful and fascinating place. The landscape of jagged, snowy peaks and dramatic fjords is home to an abundance of penguins and seals, as well as ghostly abandoned whaling stations and the grave of Sir Ernest Shackleton.

Perched on the ragged southern edge of Argentina, where the snow-capped Andes fall away into the churning sea, Ushuaia has a frontier town feel to it, and serves as the base for expeditions into the icy waters of Antarctica.