Wren In the years 1669-1675 has created a number of projects for future cathedral. The very limited requirements on the construction committee czuwającego, as well as lack of financial resources for its implementation. In the year 1673, on the basis of the best in his project, a large wooden model, which can be seen today in the cathedral crypt. At first glance, the model is very similar to real structures, but in reality it is different, many serious differences. The shape of this model is based on a Greek cross (równoramiennym) and the curved, concave walls, which in the middle of the church to create a large free space. Above this is a central part of the dome was located. Entry from the western side the nave were designed in the shape of an ancient portico style characterized. Ultimately, however, it was found that the plan for a departure from the traditional form of the cathedral.