The Senate Plaza was a large public square located in Hanna City, capital of the planet Chandrila, that was situated near the historic Old Gather-House and the Eleutherian Plaza, the latter of which housed the Chandrila Senate house which hosted the Galactic Senate of the New Republic. In 5 ABY, the Senate Plaza hosted a large Liberation Day celebration which featured a hundred former rebel prisoners from Ashmead's Lock. The celebration was attended by a large crowd of citizens and New Republic officials including Chancellor Mon Mothma. The celebration was marred by the attack on Chandrila which saw the former prisoners involuntarily attacking and killing New Republic officials.