The best-protected tract of the world’s most biodiverse forest, Peru’s Amazon basin is a strange, sweltering, seductive country-within-a-country. Its sheer vastness and impenetrability has long protected its indigenous communities and diverse wildlife from external eyes. Tribes still exist here that have never had contact with outside civilization. More plant species flourish in one rainforest hectare than in any European country, and fauna is so fantastic it defies the most imaginative sci-fi thriller. The lush Peruvian Amazon offers phenomenal wildlife-spotting and forays into untamed forest. Much of it is accessible only from lodges deep in the jungle, reached by boat and with accommodations ranging from rustic to luxurious. The lodges offer a dazzling array of programmes and activities, and staying in one (or more) is a truly unforgettable experience. Here are some of our favourites.