1970: The investigation of the archaeological site begins, after the announcement of Mr. Esteban Gonzalo Argüello, neighbour of Quintanilla de la Cueza, who knowing the existence of fragments of tiles and other remains in the land called La Tejada, brought to Diputación de Palencia a fragment of mosaic that had found in the place. The President of the institution that year (and at the same time director of the Archaeological Museum of Palencia), Mr. Guillermo Herrero Martínez de Azcoitia, ordered the excavation to Mr. Miguel Ángel García Guinea, Director of the Museum of Prehistory and Archaeology of Cantabria, who had concluded the excavations in Cildá.
1971 - 1981: From October of 1970 the excavation of La Tejada begins, followed by successive campaigns until 1981, when the works had already discovered the wide set of structures that can be visited at the present.
1986: In July the Roman Villa La Tejada opens to the public. Diputación de Palencia designed a covered building similar to the one in La Olmeda for the protection of the site and its opening to the public.
1996: Declared Asset of Cultural Interest on June 13th (BOCYL 157/1996).
2015 : The new building for visitor reception was inaugurated.
2017: President of the Diputación de Palencia Ms. Ángeles Armisén and the Minister of Culture Mr. Íñigo Méndez de Vigo, analyze the initiative for the adaptation of the archaeological site. The current building could improve the conditions for the conservation of the archaeological remains and the itinerary for visitors.
2023: New tourist brochures and explanation leaflets in Spanish and English are published to be used in the site. New merchandising is designed.
2023: Diputación de Palencia plans to build a new building that will guarantee the conservation of the mosaics and promote their tourist use. A global project in 'La Tejada' that begins with the execution of maintenance and conservation work and will culminate in a comprehensive reform project for which funding is already being sought.
2024: The Ministry of Industry and Tourism has agreed to grant Diputación de Palencia a subsidy of 3 million euros to carry out the comprehensive reform project of the archaeological site 'La Tejada', in Quintanilla de la Cueza and owned by the Institution, within the framework of the call for Comprehensive Rehabilitation of Historical Heritage for Tourist Use of the Ministry of Industry, Tourism and Commerce. The total budget for the entire project amounts to 4.3 million euros, so the provincial institution will assume the rest of the cost.