The tourism industry is a valuable sector generating major income for nations. The local Government of a tourist spot may undertake several projects to be implemented for the benefit of tourism in that place. Currently, the authority of the local Government, involving their ministers, decides which projects are to be undertaken. Alternatively, the local Government may involve, in a crowdsourced (crowdsourcing can be implemented with smart devices such as mobile devices also) manner with the technological support of smart cities, the local residents and the tourists in this process, leading to a more transparent and more engaging selection of projects. In this paper, a strategyproof, Pareto optimal, and scalable mechanism is provided to gather the preferences of the tourists, the residents and the ministers (with tunable weight parameters) for their most preferable choices of projects in the tourist spot and selecting the projects in such a manner so that the total cost of the selected projects is within the available budget