Train to the Clouds is a tourist train service in Salta province, Argentina. The third highest railway in the world, it was originally built for economic and social reasons, but is now primarily of interest to tourists as a heritage railway.
Iguazu Falls (Iguassu or Iguacu) are the biggest waterfalls in the world. Iguazu falls consist of 275 separate falls and is actually bigger than Niagara Falls. It's located on the Border of Paraguay, Argentina and Brazil. (Photo by David Rochas).
La Cueva del Fantasma, ("Cave of the Ghost" in Spanish) is a giant cave in southern Venezuela. Actually, "La Cueva del Fantasma" is so vast that two helicopters can comfortably fly into it and land next to a towering waterfall.