Huayna Picchu, Mountain summit near Machu Picchu, Peru.

Huayna Picchu is a summit in the Cusco region of Peru that rises steeply above the ruins of Machu Picchu and is reached by ancient stone staircases. At the highest point sits a temple complex built from carved stone blocks, with a narrow platform offering views across the entire Urubamba valley.

The Inca built the temples and terraces in the 15th century as part of their religious installations. The summit likely served as an observatory and sanctuary for high-ranking priests.

The name derives from Quechua wayna, "young", and pikchu, a pyramid or peak with a broad base ending in a sharp point, so Huayna Picchu is the "young peak", paired with Machu Picchu, the "old mountain". Local guides say the summit housed the high priest and local virgins, who walked down to Machu Picchu before sunrise each day.

The ascent requires a permit that must be booked in advance, as only a limited number of visitors per day are allowed. The hike takes around 1 to 1.5 hours and demands good physical condition due to the steep and narrow steps.

The staircase measures less than 50 centimeters (20 inches) wide in some places and runs directly along the cliff edge. Many visitors use the side ropes to navigate the narrow passage.