the.com/walls
The only thing standing between you and the neighbors' opinion of your music.
berlinIts wall fell in 1989 after 28 years
great wallStretches over 13,000 miles, not visible from space
jerichoAmong the oldest defensive walls, roughly 10,000 years old
load-bearingRemove the wrong one and the roof joins you
cell functionPlant cell walls let trees stand without skeletons