It seems a number of commenters don’t know that Wikipedia has a built-in page to show you articles with subjects near you.
* In the browser console
* In the browser settings
* In a browser extension
Meanwhile, addresses are hard in a global context. Implementing address search can be a lot of work because browsers don't provide one so you need either a (global) address database or an API endpoint to access one. Also, people expect a search which is both fuzzy and with autocompletion, which works best by prioritising results based on the browser location. Finally, you need to implement a user interface for the search field.
The reason is that it would be extra work, and it’s not clear how many people actually want this feature.
The application is already able to find articles around a given address. The only thing that would be changed, is that you enter the address by hand instead of letting the browser locate you. This can be easily done in a day
Would be nice to be able to expand it so that I could discover interesting things a little further out but still in easy driving distance.
(Probably possible to do a sparql query for this at https://query.wikidata.org but seems like it would be complicated, at least given my relatively novice level of sparql skills)