 The Bloc B and museum building as a whole opened on the 6 July 2018.During Lithuania's presidency of the Council of the European Union, the palace was used as one of the main venues for the meetings of heads of European countries.On 28 November 2013, during the Eastern Partnership Summit in Vilnius, a dinner was held in the palace with many guests, including German Chancellor Angela Merkel; British Prime Minister David Cameron; French President François Hollande; Polish President Bronisław Komorowski; European Council President Herman Van Rompuy; European Commission President José Manuel Barroso; European Parliament President Martin Schulz; European Commission Vice-President and High Representative of the Union for Foreign Affairs and Security Policy Baroness Catherine Ashton; Commissioner for Enlargement and European Neighbourhood Policy Štefan Füle; Commissioner for Trade Karel De Gucht; the presidents of Latvia, Cyprus, Romania and Slovakia; the Prime Ministers of Czech Republic, Denmark, Estonia, Greece, Italy, Croatia, Luxembourg, Malta, the Netherlands, Portugal, Slovenia, Sweden, Hungary and Spain; as well as other high-ranking officials.