Estancia Cerro Guido, a Chilean ranch that swapped puma bounties for conservation tours, offers travelers luxury experiences on the edge of the wilderness.

Karl Bushby arrived in Hull, England, on Monday after spending 28 years crossing four continents on foot.

© Paul Ellis/Agence France-Presse — Getty Images

Karl Bushby arrived in Hull, England, on Monday after spending 28 years crossing four continents on foot.

© Paul Ellis/Agence France-Presse — Getty Images

Karl Bushby has walked 31,000 miles, crossing some of the world’s harshest landscapes. He plans to reach his mother’s house in England next week.

© Sam Bush for The New York Times