The Antarctic Sound is a 37-mile channel that separates the Joinville Island group from the Antarctic Peninsula. Prepare to be amazed as you sail among vast icebergs that have broken free from the Larsen Ice Shelf, and look out for wildlife including Gentoo penguins and whales.

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.

Icy and remote, the South Shetland Islands are situated about 100 miles north of the Antarctic peninsula. The archipelago is home to a scattering of research stations, along with thousands of penguins, seals and sea lions, and you can still see the remains of Ernest Shackleton’s ship the ‘Endurance’ on the south west shore of Elephant Island.

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.

The little fishing village of Caleta Tortel hugs the base of a mountain, perched above turquoise waters fed by glaciers. There are no cars or horses in Caleta Tortel - instead, the piers and houses are connected together by a remarkable network of wooden boardwalks.

Rugged and unspoilt Chiloé, situated at the southern end of Chile’s Lake District, is a unique and culturally distinct island that stands apart from the rest of the country. The main town, Castro, is notable for its colourful waterfront homes on stilts (known as palafitos), and is the gateway to the dense forests and rolling hills of the island interior.

Niebla is a charming little beach resort in southern Chile, on the banks of the Valdivia river. The bustling folk market is a popular tourist attraction, while history buffs will enjoy exploring the restored colonial fortress, built by the Spanish in the 17th century.