Have you ever walked past the iconic East Block building nestled behind Old Parliament House and wondered about the building’s history? Here’s your chance to discover more about this architectural gem. Standing for nearly a century since opening in early 1927, the heritage-listed East Block is the oldest building in the Parliamentary Triangle and has served as Canberra’s original General Post Office, the Prime Minister’s Department and ASIO headquarters. Join a tour of historic East Block and learn more about the fascinating stories surrounding this building.