I used this code to add the location below the topics titles on the topic list:
javascripts/discourse/connectors/topic-list-after-title/topic-list-after-title.hbr
{{#if context.topic.location}}
<br>
<span class="title-location">
{{d-icon 'map-marker-alt'}} {{location-format context.topic.location opts}}
</span>
{{/if}}
It won’t work soon, if someone has an idea how to make it compatible with the recent version 