Nothing beats relaxing by the water while you're on vacation. Take a picnic to Henley Lake and then stick around for a pretty sunset.
This body of water in Masterton comes recommended by travelers, so leave a spot for it on your travel itinerary. However, don't end your sightseeing there. There are many more spots waiting for you to appreciate after Henley Lake. Queen Elizabeth Park, Aratoi: Wairarapa Museum of Art and History, and Old Stick & Rudder Company are not far away.