A massive influx of tourists is witnessed every year in the cultural and heritage sites of India experiencing the unique culture of the tourist spots, especially with the aim of gaining knowledge about the pasts. This intention of tourists is usually served by the museums which showcase the physical evidence of humankind and the environment. A museum packs within itself a rich culture and heritage. It is a growing demand by the responsible tourists in recent years that museums, being an institution for collecting and preserving artefacts, should take up the responsibility of protecting nature also for its sustainability. This study aims to analyse the gap between the tourists’ expectations and perceptions, thus aiding in the assessment of their satisfaction with the green services of the museum. It is found that the tourists’ expect more of ecotangibles(green practices) than any other dimensions. There is certainly a dearth of literature studying the green practices that can be implemented in a museum. Hence, this paper also focuses on developing a green marketing mix for museums through secondary data available on green practices employed worldwide to create greener and sustainable museums and attract many responsible tourists towards it.