Statue of Mary Poppins outside the old home of author P.L. Travers in Maryborough. Photo / Supplied Expand

Statue of Mary Poppins outside the old home of author P.L. Travers in Maryborough. Photo / Supplied

What do you think?" asks Carmel Murdoch. She points at the statue, reminding me to call her "Mary Heritage" because she's dressed in a 1850s period costume.

"Supercalifragilisticexpialidocious," I reply, since this is what you say when you don't know what to say.

A bronze statue of an umbrella-wielding English nanny? It's certainly not what I expect to find in an Australian town. But there it is, on the corner of Richmond and Kent Sts in Maryborough, north of Brisbane, a town which happily celebrates its link to fictional nanny Mary Poppins.

P.L. Travers - author of the Mary Poppins books - was born here in 1899. Her real name was Helen Lyndon Goff and she lived above a bank her father managed. It's now a private residence, but plans are afoot to transform it into a museum.

The Goffs left Maryborough when Helen was small. As a young woman, the ambitious writer moved to Britain, travelled widely and settled in the United States before returning to Britain. She wrote a series of Mary Poppins books in England and they were later melded into a blockbuster film and stage musical.

Travers died in 1996 - reputedly an alert and often prickly old woman.

Arguably one of Australia's most commercially successful authors, P.L. Travers is often forgotten when the country's esteemed writers are listed. But she's huge - and certainly not forgotten - in Maryborough.

An annual Mary Poppins Festival showcases parading residents dressed as the nanny or other characters from the stories. Add a Mary Poppins-themed street market and a Mary Poppins flavour to rides on a small steam train operating all year in a local park, and Maryborough's in party mode.

Among the town's year-round attractions: daily walking tours led by Carmel Murdoch, the town's fifth "Mary Heritage". These are true travel bargains: they're free. "People turn up at Town Hall," she explains. "There can be one - or 50."

She guides them through the century-old Town Hall's council chambers and to a string of historic buildings - exquisite examples of colonial architecture. Some are now volunteer-run museums and galleries. Among her destinations is P.L. Travers' birthplace.

It seems faintly ridiculous: a line of out-of-towners tailing a woman in colonial-era costume down the main street. Locals barely blink. They've seen it all before.

At Town Hall Green we pause. Some visitors spread paper over 10 etchings of characters from Mary Poppins books to create souvenir rubbings.