[10] Philip Wirth's children, Eileen, Doris, Madelaine, Phillip, George, and Marizles 'Rillie' (died 1988),[16] continued to run the circus until its closure in May 1963.

[5] While Philip Wirth was a ringmaster standing 6 feet (1.8 m) tall and weighing 14 stone (200 lb; 89 kg), he was also an expert horse trainer.

In another instance, a pony would enter the ring dressed as a woman, undress, put on a nightgown, blow out a candle and get into bed; teaching all done without cruelty, but patience and some sugar.

[25] By 1930 Wirth's Circus was now operating on a two-yearly national tour, usually staged for August's Royal Exhibition Show in Brisbane, Easter in Sydney, and November's Melbourne Cup.

[5] The circus was the only one allowed to operate during World War II in Australia, but faced the challenges of travel by road and petrol rationing.

After World War II, painter Norma Bull (1906–1980) travelled with the company painting scenes of circus life for twelve months.

[17] In 1904, the area of the site not occupied by FitzGerald's was developed as a fashionable meeting place called Prince's Court.

This area featured a Japanese Tea House, open-air theatre, miniature train, water chute and a 15-member military band.

[10] By 1911 they had built a new circus Hippodrome (a 5000-seat auditorium)[13] and a roller skating rink, and leased the original Olympia to Cosens Spencer as a cinema.

[31] The Green Mill Dance Hall closed in 1950, and the remainder of the Wirth buildings on the site, valued at £70,000, were destroyed by fire in December 1953.

With the Capitol Theatre opened on 7 April 1928, the circus moved to a nearby site at Wentworth Avenue and Goulburn Street.