She remembers eating breakfast at Perth's Cottesloe Beach, dining out in Byron Bay and has dreams of Sydney's Bondi.

But this mystery woman says she remembers nothing else.

Do you know this woman? She has no idea who she is, where she is from or how she got there. Credit:Facebook

Not her name, her age or how she ended up in a US hospital.

The woman, believed to be aged in her 50s, with white hair and brown eyes, said she was found by US fire fighters in the coastal Californian town of Carlsbad on February 1, suffering from what she said was amnesia.