Why Families Are Flocking to This Unexpected Art Playground in Sydney

We went underground at the Art Gallery of NSW — and didn’t want to leave

If you’ve ever wished an art gallery felt a little more like a place to hang out (and a lot less like “don’t touch that”), this is your moment.

Hidden beneath the galleries at the Art Gallery of New South Wales, the usually cavernous Nelson Packer Tank has been completely transformed into something wildly unexpected: an underground art park you’re actively encouraged to use. Run, climb, linger. Bring snacks. Stay awhile.

Created by Sydney-based artist Mike Hewson, this free exhibition blurs every boundary between art, play space and public park. Think monkey bars and swings sitting comfortably alongside sculptural installations. There’s a water zone to cool off, a fully functioning sauna and steam room (yes, really), and even working barbecues — BYO snags and tongs. Best of all, entry is free!

Mike Hewson testing materials in the Nelson Packer Tank, June 2024, photo © Art Gallery of New South Wales, Felicity Jenkins

What kids (and grown-ups) can actually do

Think less “look, don’t touch” and more “jump in and explore”. Inside the Tank you’ll find monkey bars, swings, climbable structures and spaces to build, play and linger. There’s also a dedicated water play area, so parents take note: kids will get wet. Pack spare clothes, towels or swimmers if you’ve got water-loving little ones.

Everything is made from salvaged and reclaimed materials, giving the whole space a slightly anarchic, creative energy that feels welcoming rather than precious.

Nelson Packer Tank. Image courtesy of Art Gallery of NSW.

Sauna, steam room & BBQs (yes, really)

One of the most talked-about features is the fully working sauna and steam room — but this part is strictly for ages 16+. It’s a genuinely unexpected addition inside an art gallery and very on-brand for Hewson’s idea of art as a place to be, not just observe.

There are also working barbecues dotted throughout the space. You’ll need to bring your own food and equipment, but it’s hard to beat the novelty of sizzling sausages inside a major art institution.

Kids playing at Keys Under The Mat Exhibit. Image courtesy of Art Gallery of NSW.

The practical stuff parents want to know

🚻 Toilets: clean, modern and plentiful with separate baby change rooms (a parenting win)
🍴 Food: gallery options are limited to the Mod Dining or the outdoor kiosk, so bring snacks if you’re staying a while
👶 Ages: all ages welcome, with plenty for primary-school kids to teens
💦 Dress code: comfy clothes you don’t mind getting wet or grubby

A new wet-weather favourite (with crowds to match)

Word is well and truly out. This exhibition has quietly become a go-to wet weather destination for parents, especially on weekends and during school holidays. The underground location, free entry and water play combo is hard to beat — but it does mean it can get busy. If you prefer a calmer experience, aim for weekday mornings or arrive early, and manage expectations if you’re visiting during peak times.

Indoor playground. Image courtesy of Art Gallery of NSW.

Why it feels special

Hewson describes himself as a host, inviting visitors to make themselves at home – “the key’s under the mat”. That generosity comes through. Families spread out, kids play, and adults linger instead of rushing through.

It feels less like an exhibition and more like a temporary underground neighbourhood – one that asks what an art museum could be if everyone was truly welcome.

Tip: wear comfy shoes, pack snacks and spare clothes, and don’t rush. This is art you’re meant to live in.

Planning a visit? Click here for more info.

About Author

Francesca Millena

Writer, foodie and ideas-sponge, Francesca grew up in the Inner West and loves writing about all things IW related from playgrounds and podcasts, restaurants and retail, bubble tea and basketball courts. Mum to an active child, she also knows a thing or two about keeping a little one entertained on a rainy day.

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