Located in Kalutara, around 7 kilometres from Wadduwa Richmond Castle is an old mansion built in 1900. This 42-acre estate has a rich history and is as symbol of influence and power of Baron Arthur Siriwardena, who built this castle. The castle boasts luxury at every corner which was built from material sourced from all over the world. You can witness a glimpse of the life of the Baron and his wife through the architecture of this castle and the photographs on display. The architecture of the castle is said to have the influence of four styles, local courtyard tradition, Roman-Dutch, Indian and Greek styles. This grand mansion has two floors 99 doors and 34 windows. With its luxury marble floors, wooden window panes and grand structure, Richmond Castle is one of the top places to find in Wadduwa.