By harnessing the power of nature and being careful with the energy we use, the places we find special can be beautiful forever. Here are just some of the projects we've been working on.
BBC One's Countryfile makes a splash with the largest electricity generating waterwheel in Europe at Aberdulais Tin Works and Waterfall.
Find out how we're powering our places in Wales with hydro electricity.
We’ve built the UK’s largest marine source heat pump so we can use the sea to warm up a Welsh mansion. It's part of our ongoing programme to use more renewable energy.
Now generating more energy than it uses, the National Trust's Powis Castle in Wales, could be one of the first energy self-sufficient nurseries in Britain.
We use renewable energy schemes at a number of our places. Find out more about the different types of green energy and how they work.
As Wales's biggest land owner, we look after a lot of nature and wildlife. We strive to maintain our land as an environment that supports a rich diversity of life.
From palatial buildings to industrial machinery and family heirlooms, we care for rich and diverse collections throughout Wales.
Hoffem weld yr iaith Gymraeg yn cyfrannu at naws arbennig ein safleoedd, a chyfrannu hefyd at greu profiadau cofiadwy i’n hymwelwyr ar draws Cymru.