now part of 28E's. Elevador da Graça The second line ran from Rua da Palma on a long route to Largo da Graça, climbing in altitude. It was opened on 26 March 1893. The depot and powerhouse were at the Graça terminal. The Graça route was served by bidirectional vehicles. Service ended in 1913 but part of the route was revived in 1915 and continues to operate as an electric tram line (12E). Elevador de São Sebastião On 15 January 1899 a third cable tram line started operating under a different concession from the other two. It was the longest of the lines, extending for between São Sebastião and Rossio. The depot and powerhouse were in Palhavá (São Sebastião). It also ran for the shortest time of any of the lines, suffering bankruptcy in 1901. Electrification and modern era On 30 August 1901, Lisbon's first electric tramway commenced operations. Within a year, all of the city's americano routes had been converted to electric traction, and by 1913 the cable trams were retired. Until 1959, the network of lines continued to be developed, and in that year it reached its greatest extent. At that time, there were 27 tram lines in Lisbon, of which six operated as circle lines. As the circle lines operated in both clockwise and anticlockwise directions, each with its own route number, it is more correct to speak of a total of 24 tram routes, all of them running on narrow gauge tram lines. The slow decline of the network began with the construction of the Lisbon Metro and the expansion of the bus system. Current network The current lines are: 12 - Praça da Figueira → Miradouro de Santa Luzia circular route (clockwise only) 15 - Praça da Figueira ↔ Belém ↔ Algés 18 - Cais do Sodré railway station ↔ Cemitério da Ajuda 24 - Praça Luís de Camões ↔ Campolide 25 - Praça da Figueira ↔ Campo de Ourique (Prazeres) 28 - Praça Martim Moniz ↔ Graça ↔ Estrela ↔ Campo de Ourique (Prazeres) The six remaining lines operate in the southern city centre and west of the city only. Aside from the obvious tourist attraction, those lines are still important because sections of the city's topography can only be crossed by small trams. Tram 15 also connects the entire western riverfront of the city to the centre and allows a better link for