Explore this unique village in Spain nestled within a rocky mountain. While wandering the idyllic streets, you'll be ...

During a particularly tumultuous period of Korean history in the 1950s, the village was built by followers of the ... to go in various directions into the surrounding alleys above and below.

chiseled into the mountain by local villagers. The Guoliang Tunnel is located in the Taihang Mountains in China's Henan Province, and was built to connect the isolated village of Guoliang to the ...