2 May 2012
Last updated at 07:42
The Green Bridge of Wales in Pembrokeshire is a spectacular natural arch, formed by the action of the sea over hundreds of thousands of years.
South Stack lighthouse on Anglesey overlooks dramatic sea cliffs with thousands of nesting seabirds and rare plant species.
On extreme low tides, ancient trees emerge from the sea at Borth in Ceredigion. Radiocarbon dating puts the remains at 3,500 years old.
Barafundle Bay, Pembrokeshire, has been voted as one of the UK's best beaches and used by the Welsh Tourist Board to promote Wales - with its golden sands and crystal-clear water.
The limestone headland of the Great Orme, Llandudno, is a Site of Special Scientific Interest and the location of one of the largest prehistoric copper mines in the world.
The Merthyr Mawr Warren reserve is situated on the coast between Porthcawl and Ogmore-by-Sea. Spread over 323 hectares, the dunes rise to 200ft (61m) and are the second tallest dunes in Europe.
Nash Point on the Glamorgan Heritage Coast shows the amazing stratigraphy of sedimentary rocks and water-eroded coastline.
Oxwich Bay on Gower has a multitude of habitats within a small area: beach, woodland, salt marsh and ancient dunes.
Goat's Hole Cave, Paviland, was the location of a famous prehistoric burial: the 'Red Lady of Paviland'. Discovered in 1823 it later turned out to be a Paleolithic man, possibly the oldest remains in Britain.
In Jurassic rock near Barry at Bendrick Rock you can see an unidentified three-toed dinosaur's footprints on what was once lakeside mud.