In Australia, what public space is popular for community Christmas caroling events called 'Carols by Candlelight'?

Parks or beaches

Which country hosts the cycling race Tour de France? Who unified various nomadic tribes in Afghanistan, founding the Durrani Empire in the 18th century? Who was the first president of the African country of Ghana after its independence in 1957? Who commissioned the famous voyage of Vasco da Gama? Which gland produces the hormone adrenaline?