The Peradeniya Botanical Gardens is an exceptional park worth visiting. Uniquely positioned with river Mahaweli the longest river in Sri Lanka, enclosing the park on three sides, the gardens behold over 4,000 varieties of plants, an abundance of spectacular blooms, an avenue of majestic palms and an exotic collection of orchids in addition to medicinal plants and spices spread over 60 hectares of meticulously designed lawns, plant houses and pavilions.