This document discusses the seven wonders of the modern world: Taj Mahal, Colosseum, Chichen Itza, Machu Picchu, Christ the Redeemer, Petra, and the Great Wall of China. It provides brief descriptions of each wonder, including when and why they were built as well as interesting facts. For example, it notes that the Taj Mahal was built by Shah Jahan as a memorial for his wife, while the Colosseum could hold up to 50,000 spectators for ancient games.