1970, the work with the mosaics was consolidated, at a time when the monograph museum was expanded (with a basement, installations for a guard and interior shelter). But, throughout the transition to Portuguese democracy and beyond, the team at Conímbriga attempted to consolidate and maintain the site. The early work continued into 1974, with the consolidation, restoration and expansion of the museum and 1975, with the prospecting into other zones, the paving of walkways, landscaping and solutions to drainage issues. In 1976, the gazebo and interior of the older Monographic Museum was repaired. These repairs continued into 1977, with expansion of the museum, restoration of the facades, the old portico and the colonnade was transformed into an internal gallery, the arrangement of the principal atrium and creating a gutters to alleviate pedestrian walkways. The following year began the construction of a ticket booth in cement and glass, while in 1979 an electrical transformer and litter incineration unit were installed. The installation of electrical devices, illumination and climate control units in the museum occurred between 1981 and 1982. In 1986 a new awning was installed to cover the Casa dos Repuxos. The first permanent public exposition was opened in April 1985. During the 1990s, there were projects to remodel the museum and upgrade the displays and various installations to support visitors, under the direction of Cruz Alarcão, Arquitectos Lda. They were re-contracted in 2004–2005 to improve the site, including the reconstruction of the Augustian forum and southern thermal spas, and construction of a small structure for spectacles (consisting of a roadway, stage and bunks molded to the terrain) alongside the aqueduct. On 9 August 1991, the museum became part of the Instituto Português de Museus (Portuguese Institute for Museums), leading to the 1 June 1992 transfer to the Instituto Português do Património Arquitetónico (IPPAR), and then on 29 March 2007 to the Instituto dos Museus e Conservação (Institute for Museums and Conservation). Architecture The excavation site and visitors' centre are located on the outskirts of the rural community of Condeixa-a-Nova, based on a plateau-shaped triangular spur over two deep depressions (one occupied by the Ribeira dos Mouros). Although Conimbriga was not the largest Roman city in Portugal, it is the best preserved, with archaeologists estimating that only 10 percent of the city has been excavated. The urbanized civitas includes integrated structures starting from the Iron Age and extending to the 5th