During this 15-night tour, you'll travel down Argentina's Patagonian coast to reach one of the world's southernmost points -- the city of Ushuaia in Tierra del Fuego.

En route, you'll pass through the Magellan Penguin Reservation and stop for an excursion around the tip of the Peninsula Valdes.

From Ushuaia, you'll head back up north along the western side of South America and through the Andes, stopping off for a brief exploration of Los Glaciares National Park and the striking rock formations of Cordillera del Paine.

Sumak Travel; +44 20 3642 4246; from $4,843 per person

Galapagos adventure (Ecuador)

Passengers on Silversea's seven-day Galapagos Experience cruise can sign up for excursions led by the on-board expedition team's wildlife experts, and peruse a library of maps, atlases and charts provided by the Royal Geographical Society.

There are no cramped cabins; instead, spacious rooms feature down duvets, marble bathrooms and Italian linens.

Silversea; +1 800 722 9955; $5,960 per person

AUSTRALASIA

Exclusive rental of Richard Branson's Makepeace Island (Australia)

The billionaire life can be yours for a fraction of the cost, and unfortunately an even smaller fraction of the time.

Makepeace, owned by Richard Branson and Virgin Australia co-founder Brett Godfrey and located in the middle of Queensland's Noosa River, has three two-bedroom villas on offer.

You'll need more than a night to enjoy all the island has to offer.

There are Hobie cats, tennis courts, an outdoor cinema and a huge pool.

Makepeace Island; +61 42 815 3612, from $3,000 per night

Jet boat experience (New Zealand)

The Shotover Jet experience whooshed to fame earlier this year when the Duke and Duchess of Cambridge signed up for the 25-minute, high-speed excursion.

Passengers speed down Queenstown's narrow canyons in a jet boat powered by V8 engines, hitting speeds of up to 85 kilometers per hour in as little as 3 inches of water.

The boat is controlled by two units at the back.

Together, they thrust 760 liters of water a second; when these nozzles are repositioned, the boat changes direction. Very quickly.

Shotover Jet; +64 3 442 8570; from $108 per person

Outback helicopter tour (Australia)

If an Aboriginal-style walkabout sounds like fun but not quite right for you, a whistlestop helicopter tour is an easier way of seeing the main outback sites.

During this two-hour flight, you'll whiz over Uluru, Kata Tjuta and the Olgas -- the company also offers helicopter tours of Lake Amadeus, Kings Canyon and the township of Yulara.

Ayers Rock Helicopters; +61 (0)8 8956 2077; from $768 per person