Most people enter Valletta through City Gate, the main entrance to Valletta, by crossing the wide dry ditch separating the fortress city from Floriana by way of a large walkway and entering between two modern interpretations of large demibastions, their stones quarried in Gozo. On each side are the great fortress walls that have protected Valletta for many centuries.There have been five city gates in total. The present one was designed by Renzo Piano, who is also the architect of the Shard in London. The bridge leads into Freedom Square at the top of Republic Street,formerly a market, but which now acts as a pedestrian open space. Behind the city walls are wide, shallow steps; the left steps lead to Hastings Gardens while the right lead to Castille Place. Upon entering Valletta, the visitor immediately comes face to face with the New Parliament Building as well as Pjazza Teatru Rjal, both of which were Renzo Piano projects. Pjazza Teatru Rjal is Valletta’s open air venue for concerts and productions, developed from the ruins of the Royal Opera House, which was destroyed in a German bomb attack in April 1942. The venue was completed in 2013 and some columns for the Royal Opera House are still visible to this day.