In areas affected by the 2011 Great East Japan Earthquake, many museums and stone monuments were established to communicate the insights obtained from the disaster. As of April 2021, more than 200 facilities have been registered as “earthquake memorial facilities” by the government. However, most of these facilities are operated without guidance from the public. A comprehensive visitor plan is required to link each facility, and to effectively share disaster lessons. Accordingly, this study analyzed visitor access to earthquake memorial facilities, and clarified the geographical network connecting these establishments. It evaluated the accessibility of transportation for visitors, and considered ways of enhancing this network. To these ends, we created a list of earthquake memorial facilities that were constructed in the affected Tohoku region; we mapped these facilities using a geographic information system. A facility’s ease of access, as measured by the time taken to gain access, was analyzed on the basis of the distance between facilities, with transportation considered. The results were used to propose a network for an earthquake memorial facility. We also discussed the possibility of providing tours on the facility’s network, and discussed their relationships with transportation bases and other networks. For future use, we proposed a method for improving accessibility to each facility in the network.

In this study, we extracted 30 elements of the maintenance process and created labels. From these, we prepared time series charts and flowcharts, and discussed the relationship between entities and citizens' opinions regarding the process. We clarified four stages pertaining to preserved cases, and found four types of relationship between major opinions and treatment decision. Furthermore, the time following the earthquake was divided into three periods. Consequently, we suggest that citizens' opinions and advice from experts may help establish consensus in a step-bystep manner on administrative decisions.

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The Great East Japan Earthquake struck in March 2011, causing a huge tsunami on the northeastern coast of Japan. In the disaster area, there has been a movement to preserve the damaged structures as earthquake ruins. In this study, the characteristics of establishing consensus were investigated by clarifying how the earthquake ruins have been preserved and removed, and how the opinions of citizens were accounted for in the process of maintaining these sites. The study focused on 21 earthquake ruins in Miyagi Prefecture, which were the closest to the epicenter. We extracted 30 elements from the earthquake ruins maintenance process and created labels for them. From these, we prepared time‐series charts and flowcharts and discussed the relation between entities and citizens' opinions regarding the maintenance process. We clarified four stages pertaining to the preserved ruins and found four types of relationships between the major opinions and treatment decisions. Furthermore, the periods following the earthquake were divided into three phases: pioneering, deliberation, and implementation. Consequently, we suggested that citizens' opinions, coupled with expert advice, could be used to help establish consensus in an incremental manner when making administrative decisions.