The behemoth museum welcomed the families of construction workers and staff ahead of its grand opening next Saturday to iron out any kinks. width=device-width, initial-scale=1, shrink-to-fit=no" name="viewport"/>Powerhouse Parramatta: Inside the final race to open western Sydney’s massive new cultural landmark. Affected landowners and farmer representatives have demanded clear written assurances on market valuation and fair compensation norms before field surveys or land acquisition proceed.