Is "forum tui visitamus" correct - we visit your (singular) market?
For the adjective tuus to work, we have to make sure it matches in case, number, and gender. Forum is neuter and here accusative so we have to use tuum.
Thanks, Moopish. I know it's accusative for your market but I could find the word for "your" in Latin. Is there a site I can refer to?
https://en.wiktionary.org/wiki/tuus has the full declension.