Complex sentence: The cliffs and coastline around Porthcurno are officially designated Areas of Outstanding Natural Beauty and widely considered as some of the most visually stunning in the United Kingdom.
Split into simpler sentences: The cliffs and coastline around Porthcurno are officially designated an Areas of Outstanding Natural Beauty. Part of the Cornwall Area of Outstanding Natural Beauty (AONB) and widely considered as some of the most visually stunning in the United Kingdom.