1. Sillustani Tombs, located near Puno in Peru, is a pre-Incan burial ground on the shores of Lake Umayo. The site features a collection of impressive cylindrical stone tombs known as chullpas, built by the Colla people. These tombs were used as burial chambers for important individuals, and some of them reach heights of up to 12 meters.

The construction of the chullpas is a testament to the advanced engineering and masonry skills of the pre-Incan civilizations. The site offers stunning views of Lake Umayo and the surrounding landscape, making it a popular attraction for visitors interested in ancient history and archaeology.

2. The Sillustani Tombs are open to visitors daily from 8:00 am to 5:00 pm. It is recommended to check the current opening hours before visiting. Unfortunately, there is no phone number available for the site.

3. The entrance fee to visit Sillustani Tombs is typically around 10-15 Peruvian Soles (approximately $3-5 USD). Visitors can reach the site by taking a taxi from Puno, which is about a 30-minute drive away. Some tour companies in Puno also offer guided tours to Sillustani as part of their itineraries.