The Castle of São Jorge (Portuguese: Castelo de São Jorge) is a moorish castle that
occupies a commanding position overlooking the city of Lisbon, the capital of Portugal,
and the broad Tagus River (Portuguese: Rio Tejo) beyond. The strongly-fortified citadel,
which, in its present configuration, dates from medieval times, is located atop the
highest hill in the historic center of the city. The castle is one of the main historical
and touristic sites of Lisbon.
A traditional form of public transport in Lisbon is the tram. Originally introduced
in the 19th century, the trams were originally imported from the USA and called americanos.
The original trams can still be seen in the Museu da Carris (the Public Transport
Museum) (Carris). Other than on the modern Line 15, the Lisbon tramway system still
employs small (four wheel) vehicles of a design dating from the early part of the
twentieth century. These distinctive yellow trams are one of the tourist icons of
modern Lisbon, and their size is well suited to the steep hills and narrow streets
of the central city.