Bau is the main geo-area in the aspiring Sarawak Delta Geopark (SDGp) with abundant products for sustainable tourism activities - geotourism, which is part of ecotourism. It is blessed with various attractions, thanks to the existing natural resources, culture, and socioeconomic activities in the present and the past, such as the history of gold mining. It has a long and unique geological evolution - beginning from deep sea with some volcanic eruptions and turning to shallow marine where the huge coral reef was formed which subsequently became limestone after millions of years. Exogenous processes of weathering and subsequent erosion alter the geological landscape and landforms to form beautiful tropical karst morphology as we can see today, including the newly found “Paku Rock Maze Garden”. These attractions and tourism products are in the terms of geosites, biosites, culture sites as well as socioeconomic activities which will be connected by several proposed geo trails within the SDG area. Most of the geosites are outstanding national (ONV) up to universal heritage value (OUV).