After climbing the towers you see monsters, half-man and half-beast.
These demon looking creatures carved out of stone are called gargoyles. The word gargoyle comes from a Latin word, meaning gullet or drain. That's what
the strange looking creatures are, they're drainpipes. Each grotesque
figure has a passageway inside that carries rainwater from the roof and
out through the gargoyle's mouth. From the top of the Notre Dame Cathedral's towers
the gargoyles have a magnificent view of the city of Paris.