Spend a few days acclimatizing in Lima, the foodie capital of South America, before heading up to Cusco. Trekking the Inca Trail is a serious undertaking for families and we'd only recommend it for fit, active teenagers. Younger children will enjoy the adventurous train ride which can now take you to Machu Picchu and beyond to the villages of Lake Titicaca and Arequipa. Don't leave without introducing your children to the Amazon rainforests; My Native particularly likes Inkaterra's ecolodge but there are also some fantastic cruise expeditions for families.
Over the long summer holidays, we think it's a good time to head further afield and the Seychelles is just beautiful in July & August. You do need to be careful where you decide to stay and we'd recommend the resorts on the north-west coast to avoid the south-easterly trade winds. Though the Seychelles is a relatively small archipelago, each island has a character of its own and we'd definitely recommend splitting your time between at least two islands. The Four Seasons Resort on Mahe is undoubtedly one of the best places in the Seychelles for families; its geography offers a well-protected, sandy beach, a shaded garden area (home to a family of giant tortoises) and a large children’s pool lined by mini sun loungers. And My Native loves the villas and kids-club on the private-island resort of Six Senses Zil Pasyon.