Original sentence: In 1811, the grotto was restored by the neoclassical architect Jean Chalgrin, the architect of the Arc de Triomphe, who replaced the simple water fountain in the niche of the grotto with two streams of water,  and added a white marble statue representing Venus in her bath
Edited sentence: In 1811, at the instructions of Napoleon Bonaparte, the grotto was restored by the neoclassical architect Jean Chalgrin, the architect of the Arc de Triomphe, who replaced the simple water fountain in the niche of the grotto with two streams of water,  and added a white marble statue representing Venus in her bath