Also for fans of Czech architecture, this year's Architecture Day Festival takes place from Sept. 29 to Oct. 5, inviting the public to discover architecture in 135 Czech and Slovak cities. The largest architectural event in the country offers over 450 tours, walks, and bike rides led by experts to normally inaccessible historic and modern buildings. Participants can explore architectural gems, neglected structures, palaces, factories, and more. The 13th will highlight unique structural solutions across centuries. This year also spotlights architects Karel Prager and Jan Blažej Santini-Aichel.