In what year was the world's worst Bushfire?

Answer 1

Seven years.

Canberra's most dangerous bushfires were in January 2003. Four people were killed, over 500 homes destroyed, and the Mount Stromlo Observatory, headquarters of the Research School of Astronomy & Astrophysics of the Australian National University was destroyed.

Answer 2

On 7 February 2009 in Australia, known as the Black Saturday bush fires, almost 200 lives were lost, over 3,000 homes and properties were burned, including over 1.1 million acres of land.

Answer 3

The world's worst bushfire occurred in 1851 in Australia. Known as "Black Thursday," it was a series of bushfires that burned across the state of Victoria.