Lisbon is a so hilly that you need abrupt transport to go from one neighborhood to another. There are two such contraptions.
This elevator was designed by Raoul Mesnier du Ponsard, a disciple of Mr. Eiffel. The elevador has elaborate iron work, and 2 cars that bring people up and down. Right now, the other side is closed, but you can still go up and down to experience the view of Lisbon. When you get to the top you can climb a spiral staircase to a restaurant on the roof. Your table is right at the edge, so it pays to forgo the beer and stick to Perrier.
The other elevador, the Elevador da Gloria, is down the road a bit. That one is a trolley car pulled by a huge cable. To keep the passengers upright it has a wedge bottom, and looks like an enormous platform shoe from the 1970's.