The top tourist destination in Peru is the Incan citadel of Machu Picchu. Not so well known is that the capital Lima also holds many ancient ruins — so many that that they can't all be taken ...

Each day, 144 people can enter the central area of the ruins between 8 a.m. and 5 p.m., with groups of 12 entering through the Access 1 entry point in 45-minute intervals.