And they thought the Great Wall of China was the only human-made object that could be discerned from space. More images here.
Space Imaging’s IKONOS satellite collected this one-meter resolution satellite image on May 5, 2003. The image shows a portion of the Vatican City, an enclave of Rome, Italy that extends from the banks of the Tiber River to the Vatican Hills of western Rome. The wall near the Papal Audience Hall (lower middle) serves as an international boundary around this autonomous and world’s smallest state. Also seen (clockwise) in the image is the Apostolic Palace with the Papal apartments; St. Peter’s Basilica Square and central obelisk (center); Sistine Chapel, Courtyards of Belvedere and St. Damascus (upper middle); and two of the entrances to the Vatican City State (right)—the Arc of Charlemagne (known as the Arch of the Bells) and the Bronze Doors protected by the Swiss Guard. During religious processions or ceremonies, satellite imagery may be used as a base map on which other information can be overlaid to support security, facility management, and traffic and crowd management.