Places to see  and Things to do in and around Dambulla: 

 Sigiriya Rock fortress and Museum
 Dambulla Golden Temple (Rock/ cave Temple)
 Kandalama Lake Area
 Elephant Bath/Elephant Ride and photos in Habarana
 Wild Life Safari Jeep tour in Minneriya
 Wild Life Safari in Kaudulla, Wasgamuwa and Eco Park
 Traditinal Ayurvedic and Health Spa 
 Herbal garden (On the Spice Road)                              

 Places to see in and around Kandy:

Elephant Orphanage in Pinnewala
Royal Botanical Garden in Peradeniya
Hunnasgiriya area and Water falls
Mahaweli river ( Longest river in Srilanka ) and Kandy  Lake area
Herbal Garden
Fresh Vegetable and Fruit Market
Kandy Upper lake drive and View point

Things to do in and around  Kandy:

Elephant rides, watch elephants bath, get great photos
Boat tour on Kandy lake
Visit Udawatta Kele Sanctuary forest
Kandyan Dancing  Perfomance and Fire walk(Culture show)
Factory Visit ( Wood carving/ Batik / Souvenir/ Silk
Gem and Jewels Factory and Museum
Kandy  Arts  and Craft Centre

Places to see and Things to do in Nuwara Eliya:

 Tea garden / Tea plucking and Tea Factory Visit
 Water Falls / Rivers / Gregory lake area
 Golf Court / Race Course / English Cottages and Bungalows
 Abewela and New Zealand Milk Farm ( Cow / Rabbit / Goat )
 Strawberry Farm
 Horten Plains National Park and World’s End
 Haggala rose garden / Victoria park
 Horse and Pony ride / Boat trips on Gregory lake / Cycling
 Nuwara Eliya Bazar ( jackets and branded T-shirts )
 Leisure World Amusement Park

 Places to see and Things to do in Bentota area:

 Bentota Madu river nature Safari boat tour
 Glass bottom boat ride in Hikkaduwa Sea ( Coral Reef )
 Water Sport On Bentota river ( Wind Surfing /Jetski etc. )
 Turtle hatcheries
 Brief Garden
 Ketchimalai Mosque in Beruwala
 Bentota Village tour ( Cinnamon Village )
 Fresh Sea Food On the Beach Restaurants
 Southern Palm Beaches 

On the way to Negombo you may visit:

 Colombo National Zoological garden
 Colombo White House / National Museum
Independence Square
 Viharamahadevi Park / Galle Face Green area
 Shopping at Odel / House Of Fashion / Majestic City/
 Liberty Plaza / Crest Cest / Dsi / Leather and Cotton
 Collection / Beverly Street / Nolimit
 Pettah Bazzar with Shops and Street Stalls
 Lagoon and Fish market in Negombo
 Negombo Beach Park