The below description is taken from Wikipedia
In the backdrop of the lake, during the spring season, every year from February 1–15, a colorful traditional craft festival of India is held in the precincts of Surajkund. This fair was first started in 1987. Traditional craftsman (artists, painters, weavers and sculptors) from all parts of the country participate in this annual celebration named as the “Surajkund Crafts Mela” or "Surajkund designer’s Village”. Designer items created by 50 best designers and craftsmen in wood, metal, bamboo, iron, glass, textiles and stone can be seen here. This Mela (fair) is visited by lovers of arts and crafts from all over the world. The fair is held with a different theme every year on Indian culture and crafts.
The theme, specific to a state of India, is depicted at the entrance to the Mela grounds and provides an ambiance of that particular state with characteristic colors, materials, architecture, furniture and decorations. The crafts on display in the stalls (400) is of particular crafts of that state. The Mela also includes a food festival covering some of the popular cuisines from different parts of the country. Entertainment in the form of famous rhythms and dance of folk theatre are also held here during the festival.