It's flushed with bright and changing colours, inflatable domes with a labyrinth of arteries big enough to explore.

Remove your shoes and enter Arboria, Melbourne's latest public art installation, a 'Luminarium' created by UK-based Alan Parkinson of Architects of Air.

Arboria at Federation Square. Credit:Eddie Jim

The company has been creating inflatable worlds since 1992, with more than 3 million people wandering through their inclusive inflatable environments across five continents.

Arboria is one of their biggest, it's half the size of a soccer field with a central dome at 10m high.