Bolivia's cultural capital, La Paz, and beautiful Lake Titicaca combine well and can even be incorporated into a longer trip into Peru. In the capital itself, virtually every street is alive with stalls and traders selling everything from herbs and potions to obscure animal parts; the most famous being the Witches Market, uniquely atmospheric with its billowing incense, reminiscent of a similar scene in Nepal. Outside La Paz, the mountains provide plenty of adrenaline sport opportunities, from skiing to mountain biking.
At Lake Titicaca, the Peruvian side may boast the floating islands of the Uros tribe, but the Bolivian side is well worth exploring, in particular the fascinating islands of Isla del Sol and Isla de la Luna, which are dotted with ancient Inca ruins ripe for exploration.
Isla del Sol, believed by locals to have been home to the supreme Incan god Inti, is the largest of the Lake's islands. During the Incan era Isla de la Luna was home to women known as 'Virgins of the Sun', who lead nun-like lifestyles, weaving their own clothes and performing ceremonial dances to the sun. The island is scattered with Incan ruins and sacred sites and the charming Posada del Sol means you can spend the night on the island rather than making the rather lengthy day trip from Copacabana.
From Isla del Sol, it is just a short hop by boat across to Isla de la Luna. Less visited than it's neighbour, this tiny island is regarded as the birth place of the Inca Goddess Mama Quila and was once home to the 'Virgins of the Sun.' You can still visit their crumbling old convent as part of a trip to the island.