Seethawaka wet zone botanical garden is located in Illukovita village, close to Avissawella. The easiest route to reach this garden is taking the turn from Puwakpitiya station. When you are driving from Colombo to Avisswella via high level, you will find the Puwakpitiya station at your left hand side. Turn right from the next junction, take the "Puwakpitiya-Thummodara" road and travel nearly 3 km, then you can find the garden by your right hand side. Currently, this park occupies the land area of 106 acres. Even though they have some area dedicated for flowers, this park is mostly about trees. The rationale behind the launch of this park is to establish a center to conserve the highly threatened wet lowland forest flora for future generations