The year 2020 was strongly marked by the COVID-19 coronavirus disease epidemic. The consequences of the epidemic are reflected in a large number of areas. One of them is the field of tourism and tourist trips. As part of the master's thesis, we focused on the field of tourism, where we compared tourist trips before and during the epidemic of the COVID-19 coronavirus disease. Tourist sites such as TripAdvisor contain and display comments, ratings, and experiences of tourists about visiting various tourist attractions. To analyze the impact of the epidemic, we collected data on all tourist attractions for the countries: Slovenia, Hungary, Austria, Croatia, and Italy. The purpose of the analysis is to find the key areas to which the epidemic has affected the most. We did this by using a variety of methodologies such as using a graph of simultaneous occurrences, comparing data with different visualizations, and finding the strongest tourism flows. In the latter, we focused on transitions between attractions, regions, and countries on a monthly basis. The results of the comparison of tourist trips before and during the epidemic show that the epidemic resulted in a significant reduction in trips to well-known and most frequently visited locations and at the same time caused a slight change in visits to a certain type of location.
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