For a decade, the Powerhouse Museum has fascinated visitors with its technology and applied art exhibitions and since opening Te Papa has overwhelmed New Zealanders and received critical acclaim from the international museum community. Post Occupancy Evaluation was an important tool used by both museums to identify problem areas and generate appropriate, actionable solutions. Post Occupancy Evaluation complimented exhibition evaluation, standard visitor studies and research because it provided an open-ended window into visitors' experiences, enhancing museums' abilities to understand them. Post Occupancy Evaluation was applied at various times in the museums' life cycles, to various parts of the museums and with various stakeholder groups. The three Te Papa evaluations and one Powerhouse Museum evaluation identified a myriad of perceived strengths and weaknesses of each building. Diverse user experiences were documented to identify opportunities and limitations, and thereby guide improvements to achieve delight by seeing thru visitors' eyes.