In the lower regions of Palaethos (The City Shard), sunlight is filtered through the levels above. The lowest regions can be places of perpetual twilight. (http://conceptartworld.com/wp-content/uploads/2013/04/Eddie_Del_Rio_Concept_Art_n01.jpg)
Carreg Cennen Castle, Carmarthenshire, Wales. I have spent countless hours staring at this view. A truly peaceful and spiritual place where the only sounds you can hear are the sheep, cows and the whistling wind.