As one of the New Seven Wonders of the World, Machu Picchu is a must-visit for many travelers to Peru. Visitors are required to enter with an official tour guide in small groups of up to 16 people. Entry is permitted in hour-specific time slots and is limited to four hours.
Those pressed for time often visit the ancient ruins on a day trip by train from Cusco, but the 4-day trek along the legendary Inca Trail is another popular option. Some multi-day tour options also visit other regional highlights, such as Lake Titicaca and the Amazon rain forest.