
Praça da Liberdade, until 1910 Praça Dom Pedro IV, is the heart of the city of Porto. When the first mule trams arrived here in 1875, the Northern side was still occupied by the old city-hall. Most mule trams did not have their terminus on Praça, but continued to another destination. There were only single tracks on the South and East side of the square with a passing loop in front of the Palácio das Cardosas and a short stub track in front of the Igreja dos Congregados de Sto.António. With the electrification also double track was installed, but still only at the South and East side.
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