It's not as tall as the Eiffel Tower, but the elevators are completely indoors and enclosed, the observation deck is also completely indoors, and even if you go to the rooftop platform, it's large, enclosed by glass, and on a platform that is recessed from the sides of the building, so even if you look over the edge, you can still see the Eiffel Tower. The only part that isn't entirely enclosed is the elevator cab itself. The elevator takes about three minutes to travel up to the top. There are several cameras around the elevator cabin taking pictures for which you can pay 1 Euro each. The elevator does not go all the way to the top of the tower; instead, it stops at a special viewing gallery where you can view the city of Paris from atop the Eiffel Tower. The elevator was built by Schneider Electric and introduced in 1986. It uses magnetic levitation (maglev) technology to move along steel cables that circle the inside of the tower, without touching any metal parts of the structure. The elevator can carry up to 12 people at a time and is driven by an electric motor that uses magnetic forces to lift itself and its passengers upward. There is no floor indicator light because the elevator uses computer control panels to determine when it reaches its destination, just like most modern elevators do today. In conclusion, yes, the elevator in the Eiffel Tower is glass-enclosed.