Summit Colonial Knob is a park summit listing in Blue Mountains, Upper Hutt, with a Google rating of 4.9.
A hilltop park is worth visiting for the outlook, and the best ones make the view easy to enjoy, with a clear path up and somewhere to stop. Elevated spots around Wellington are often windier and cooler than the streets below, so a windproof layer, sturdy shoes and water are sensible even for a short visit. Regulars know that clear mornings and late afternoons give the best light and views, and that paths can be slippery for a day or two after rain. It helps to check the forecast first, tell someone where you are going, and leave enough daylight to get back down comfortably. Keep dogs under control and take your rubbish home.
For walkers in Upper Hutt, Summit Colonial Knob is a very well-rated spot for a walk with a view.