Procedural content generation has the potential to speed up the development of Metaverse-ready content, reducing human labour effort. The technique has been widely deployed within the computer game development domain for a considerable period of time and to great effect. However, its application for the next vision of the Web is yet to be widely adopted. Thus, this paper presents the tool ‘Visio Creativia’, developed under the EU Horizon Next Generation Internet funding, for exploring the potential of procedural content generation for the creation of Metaverse-ready art galleries, as well as other areas of application. The tool is assessed by means of two case study applications, with feedback provided through an expert user engagement and broader testing. Results indicate that the tool enhances the overall building experience, with a standard deviation and mean score of 0.45 and 6.1, on a 7-point Linkert scale.