The redesigned square now features a colorful modern art screen, public toilets, lighted pathways and semi-circular seating that forms a public amphitheater/performance space.

In a dusty field in Kitui, eastern Kenya, farmers are being taught how to construct small, semi-circular barriers of earth that control the flow of water, slowing its run-off.

They are semi-circular or segmental and on a square plan, unlike the Gothic vault which is frequently rectangular.