Ollantaytambo is a town and archaeological site located in the Sacred Valley of the Incas, in the Andes Mountains of Peru. It is renowned for its well-preserved Inca ruins and is a popular stop for tourists on their way to Machu Picchu. The town itself has a charming colonial layout, with narrow cobblestone streets and adobe buildings.

Key features of Ollantaytambo:

1. Inca Ruins: The archaeological site at Ollantaytambo features impressive Inca stonework, including a massive ceremonial fortress and temple complex. The site served both as a religious and administrative center during the Inca Empire.
2. Terraced Agricultural Complexes: Ollantaytambo showcases extensive agricultural terraces that were built by the Incas for farming purposes. The terraces take advantage of the natural slope of the terrain and are a testament to the Inca’s sophisticated engineering and agricultural practices.
3. Temple Hill: The Temple Hill at Ollantaytambo includes a series of religious structures and terraces. One of the most notable features is the Sun Temple, dedicated to the Inca deity Inti (the sun god). The site also includes the Wall of the Six Monoliths, featuring six massive stones.
4. Water Temple: The Water Temple, located at the base of the terraces, is known for its finely crafted stone fountains and channels. It is believed to have had ceremonial and ritualistic purposes, possibly related to water worship.
5. Strategic Location: Ollantaytambo served as a strategic military, agricultural, and religious center during the Inca Empire. The town and fortress played a role in the defense against Spanish conquistadors during the Inca resistance.
6. Train Station: Ollantaytambo is a significant transportation hub for visitors heading to Machu Picchu. The town has a train station, and many tourists take the train from Ollantaytambo to Aguas Calientes, the gateway to Machu Picchu.

Ollantaytambo is not only an important archaeological site but also a living town with a rich cultural heritage. Its historical significance and proximity to Machu Picchu make it a popular destination for those exploring the Inca heartland in Peru.