This Brazilian resort sits at treetop level in the heart of the Amazon. Ariau's huge circular structures, built on stilts above the water and connected by a series of walkways, are not unlike something out of a “Star Wars” film. However, there is nothing sci-fi about this resort, which is a convenient base for tourists who want to explore the surrounding rain forest and the teeming waters of the Amazon and its tributaries. Ariau sits on the banks of the Rio Negro about 30 miles from the Amazonian metropolis of Manaus. Canopy tours and chances to get up close with the Amazon's rare pink dolphins are on the agenda for the Towers' guests.