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Detail of the Santa Justa Lift, also called Carmo Lift. Is an elevator/lift in civil parish of Santa Justa, in the historical city of Lisbon, situated at the end of Rua de Santa Justa. It connects the lower streets of the Baixa with the higher Largo do Carmo (Carmo Square.) Since its construction, the Lift has become a tourist attraction for Lisbon as, among the urban lifts in the city, Santa Justa is the only remaining vertical one. The Elevator is a vertical structure, developed along the Rua de Santa Justa, consisting of a metallic tower, observation platform, walkway and base. Its base includes four vertical columns, each composed of two pillars. The largest part of the structure runs parallel to the Rua de Santa Justa. With a height of 45 metres, covering seven stories, the tower includes two elevator cabins, decorated in wood, mirrors and windows, and an initial capacity for 24 passengers in each (updated to 29 people later). The structure includes a dozen transverse beams, forming a double lattice, supported at the top by foundations at the Escadinhas de Santa Justa. On the sides of the elevator, the walkway is articulated by means of bearings, as well as on the pillars, which is articulated at the base.

(source: http://en.wikipedia.org/wiki/Santa_Justa_Lift)