Although it seems to have been a fixture of he square since the city's origin, the produce market actually opened only <u>recently.</u>
<u />It's the only word that makes any sense.
Hope this helps. :)
In a sentence, the subject of the whole paragraph is the topic sentence.
While the priceless jewel was on display; the museum increased security, decided to extend the hours so more people could see it and rearranged exhibits.