One of the scant survivors of the Roman town of Emona which once stood on the present site of Ljubljana, the Roman Wall complex runs for two blocks along Mirje street at what was the southern side of the fortification. Built between 14 and 15 AD, the wall measures 2.4 metres wide and from 6 to 8 metres high. Renovated during the 1930s, famed architect Joze Plecnik took the liberty of inexplicably adding a bizarre stone pyramid atop one section of the wall. Another renovation of the Roman Wall took place in the 1990s. This is the main vestige of the remaining traces of Emona, which fell into decline around 600 AD.