Faculty of Mathematics and Physics, CU, has launched a competition named “Designer11th for St. Wenceslas Rotunda.” The aim of the competition is to design a complete tiling layout with respect to the distribution of the 21 surviving original tiles. The winning layout will be physically implemented in St. Wenceslas Rotunda in the Lesser Town quarter in Prague by a team of archaeologists and restorers in the course of April 2016.