Kande Viharaya Temple
This temple has one of the largest statues of Lord Buddha in Sri Lanka.
Yagirala Rain Forest
A must visit, an hour from Bentota. Serenity at its best.
Sinharaja Forest Reserve
Virgin rainforest with many rare species only found here & a number of foot tracks for hiking.
Brief Garden by Bevis Bawa
Major Bevis William Frederick Bawa, ADC, CLI was a  Sri Lankan soldier and a landscaper. He was also one of the most renowned landscape architects in Sri Lanka and served as the Aide-de-camp to four Governors of Ceylon. Brief garden is a landscape garden and former home it houses some “interesting” sculpture and design.
Barberyn Island and Lighthouse
Short boat ride to get to the island. On the island there are nice views. The lighthouse is huge and overlooks the sea. The view of the mainland from the island is also scenic.  Barberyn Lighthouse is one of the four international lighthouses in Sri Lanka,  towering 34 m (112 ft) high on a round white granite tower