Treat your dad, paternal role model, or favourite car enthusiast to a day of family-friendly fun at Billings Estate National Historic Site. Pre-1999 vintage, antique, and classic car owners are invited to display and share stories about their vehicles. The Billings’ 1959 Cadillac Sedan de Ville will also be on display. Visitors can cast a vote for their favourite car (voting ends at 1:30 pm; winner announced at 2 pm), explore the museum at Ottawa’s oldest wood frame house, and challenge each other to a fun scavenger hunt challenge.