Dancing Figure Whistle - Dance, among the most ephemeral of the arts, was central to Mesoamerican civilization. The Walters Art Museum in the special exhibition "Exploring Art of the Ancient Americas: The John Bourne Collection Gift." http://art.thewalters.org/detail/80184/dancing-figure-whistle/
The Giant Stone Balls of Costa Rica Costa Rica and a few surrounding areas are scattered with giant stone balls. They are smooth and perfectly spherical, or nearly so. Some of them are quite small, a few inches in diameter, but some of them are as large as eight feet in diameter weighing several tons. They have been chiseled to perfection by persons unknown.