What started as the GAYTM, a set of very colourful automatic teller machines, has gone full rainbow for this year's Sydney Gay and Lesbian Mardi Gras.

Australian bank ANZ have completely revamped their Oxford St branch in Sydney to help celebrate the city's biggest LGBTQ event, naming it the ever-fabulous GAYNZ. The redesign also commemorates the 10th anniversary of the bank's sponsorship of the event.

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The branch is inspired by baroque art, with dabbles of rainbows and nods to LGBT culture. Two GAYTMs are featured at the front, with the inside decorated with ornate walls, a marbled floor and 16 murals created specifically for the branch.

"Over the past few years we have had an incredible response to our GAYTMs," ANZ's Mark Hand said in a statement sent to Mashable Australia. "So it was only natural to take things to a new level to celebrate the milestone. GAYNZ is often used to describe us at Mardi Gras and we thought transforming the Oxford Street branch and naming it GAYNZ was a fitting way to demonstrate our continued support for the LGBTI community."

The GAYNZ sits at the heart of Sydney's LGBT community and the Mardi Gras parade route, with the bank partnering with Twitter to sponsor a rainbow flag emoji. The emoji will appear when the hashtag #GAYNZ is used on Twitter.

Happy Mardi Gras, Sydney.