## 3 Results
### Survey and Inference of the Level of Technological Management  
The survey used was sent to the technical managers of the selected heritage sites and constructions, with several sets of questions on management, sustainability, accessibility, connectivity, innovation, and ICT usage. The level of response was 64%, meaning that the results are reliable. The survey was divided into five blocks, to which a final open-ended question was added. The first block (Block A) was of a general nature, and was entitled \"General solutions and trends for creating a smart building or place\". The next ones refer exclusively to the level of technological intelligence applied to each selected industrial heritage site: the second block (Block B) is on \"management\", the third (Block C) on \"sustainability and accessibility\", the fourth (Block D) on \"connectivity and innovation\", and the fifth (Block E) on \"application of information and communication technologies\". These blocks can be seen in Table 3.  
Table 3 shows a general summary of the survey answers, with average percentages for all the questions contained in each block. There is a majority of \"Agree\" answers in all cases, especially Block A, with 83% as the highest score, and Blocks B and D, with 50% as the lowest scores. Therefore, it is these last two blocks that have the highest percentages of \"Disagree\" answers, with 40% and 48%, respectively. Worth highlighting about the results of the first block of the survey (Block A) is that all the site managers agreed that the current technological scenario offers interesting opportunities for building a smart space. They also appreciate that technologies foster greater interaction with visitors. There were bigger differences in the other questions of this block because 83% agreed that implementing technology is a means of renewing and reasserting the value of the site, as well as improving their management, while the remaining 17% disagreed. The same response percentages were obtained in the question as to whether economic cost is considered a decisive factor when applying technologies. In the last question of this first block, 50% of the respondents agreed with the idea that applying new technologies is complicated. As explained earlier, the following four blocks of questions refer to the specific heritage building or area. On the management issue (Block B), 50% of respondents saw technological solutions and trends as a good option for managing industrial heritage, although a not too insignificant percentage, 40%, disagreed. The remaining 10% had no opinion. Asked about whether technology already plays a fundamental role in management and promotion, 50% of the sample agreed and the other 50% disagreed. There were greater imbalances in the answers to the other questions. Around 83% agreed with the fact that using the new technologies affords greater efficiency and cuts costs. Around 66% considered that the industrial heritage building or area's members and workers are sensitized to and properly trained in new digital technologies, and 83% of respondents believed that local and regional entities do not cooperate enough in implementing technology, but did acknowledge the role played exclusively by municipal authorities. The surveys show that 50% of the museums open in the industrial heritage building or sites already have a specific strategy for becoming a smart tourist destination. This positive situation is linked directly to the idea that the building or place is evolving favorably towards being considered a