Bilghan Waterfall

Bilghan Waterfall is one of the best-known tourist attractions in Alborz Province, in Karaj County, Iran. Although it is not natural, it is recognized as the largest artificial waterfall in Iran. It is located at the start of the Karaj–Chalus road, just past the Bilghan Bridge. The waterfall is designed to carry water from the Karaj River to the top of the structure, from where it drops from a height of about 30 meters. With a crest width of about 14 meters, it creates a striking, full-flowing view at the entrance to the famous Chalus Road.

With multicolor lighting, a misting system that fills the surroundings with fog, and a heating unit that prevents freezing in winter, this artificial waterfall has created a distinctive and appealing atmosphere around itself. The natural stonework in the structure and the concrete retaining walls, built with engineering techniques, add to its strength and beauty. These features keep Bilghan Waterfall active and visible in every season, even in winter, and make it a memorable stop for travelers passing along the Karaj–Chalus road.

To reach Bilghan Waterfall, simply drive from Karaj toward the Chalus Road. The waterfall lies at the entrance to the Karaj–Chalus route, just past the Bilghan Bridge, and is easy to spot along the way, with no need for a long hike. The waterfall can be visited at any time of year, because it is designed to stay active in the cold seasons with its heating systems. When visiting, we recommend following the principles of responsible nature tourism, including keeping the area clean, respecting the green space and not leaving litter behind.