The place is crowded most of the times and there are huge lines. The tickets to go on 2nd or top floor should be booked in advance through website or one should visit the place in morning hours. This was my second visit and it was crowded again so I didn't went up. Nice place to visit. The people sell Eiffel replica, mineral water bottles and other things near Eiffel Tower. This creates huge mess. The authorities should check this otherwise in some years this will be a big problem.