Situated near the town of San Agustín in Colombia's Huila Department, the San Agustín Archaeological Park is home to the largest collection of religious monuments and megalithic sculptures in Latin America, thus earning the designation as the world's largest necropolis. Dating back to between 5-400 AD, the carvers of these statues remain unknown, as the site has yet to be extensively excavated. Spanish monk Fray Juan de Santa Gertrudis was the first to document the sculptures during his missionary journey in 1756-1757, and he wrote about them in his four-volume work Maravillas de la naturaleza (or Wonders of Nature). In 1995, the park was declared a UNESCO World Heritage Site.