Colonia del Sacramento
On the east bank of the Río de la Plata, 180km west of Montevideo, but only 50km from Buenos Aires by ferry, Colonia is an irresistibly picturesque town enshrined as a Unesco World Heritage site. Its Barrio Histórico, an irregular colonial-era nucleus of narrow cobbled streets, occupies a small peninsula jutting into the river.
Central Suriname Nature Reserve
Any map of Suriname reveals huge swaths of protected areas. One of the biggest, covering 12% of Suriname's land area, is this 1.6-million-hectare reserve, established in 1998 with a US$1 million donation from Conservation International. Around 40% of Central Suriname Nature Reserve's plants and animals are found only in the Guianas.
There is rarely anything more mysterious than the discovery of an ancient abandoned town, and Ciudad Perdida (literally 'Lost City') has lived up to its name for four centuries. Known by its indigenous name of Teyuna, it was built by the Tayrona people on the northern slopes of the Sierra Nevada de Santa Marta, and was most probably their biggest urban center.