Top and 2nd: The Grand Arche of which I wrote above.
It is 360 feet tall, and you can take an elevator to the top and see a great view across Paris to the Arc de Triomphe and the obelisk in the place de la Concorde, but we didn't do that.
Third: our hotel, the Paris Renaissance (which is a Marriott property), was quite lovely and lush. The lobby had a huge vase of wonderful flowers (which I will show you later) and the rooms and baths were quite spacious. They had the best soap; a lemon-grass scented square of fine quality. I almost hated to use it! Looking up into the Arc de Triomphe.