There were a range of public or private spaces, both outdoor and indoor sites, for the use of festivals and theatre. Some were reserved for the court while others were used by civic society: the streets and squares of cities, gardens, large halls in palaces and so on. For the event, these sites were decorated with ephemeral structures, illuminated and decorated with skilful apparati (these were often firework machines), illuminations and magnificent textiles, while the performers wore splendid costumes or masques. The decorations were used to transform these sites into imaginary worlds for the duration of the feast, festival or performance. Theatre design and technology (artistic solutions, tools and effects) had huge impact on municipal art and architecture: practitioners used their skills honed within the theatrical/festive arena to find solutions in urban planning and architecture and translated their innovations to the decorative schemes in churches and palaces. Some urban venues became frequent sites for festive events.