Wuhan Center for Disease Control & Prevention (WHCDC) is 300 m from the market.
Wuhan Institute of Virology (WIV), with the more highly classified work, is 14 km away, but linked to the PLA Hospital, WHCDC and seafood market on Line 2 of the Wuhan metro:
The idea it spread via the seafood market has been largely debunked even by CCP and WHO -- there were cases before those occurred, there were no traces found there, etc...
Wuhan Institute of Virology (WIV), with the more highly classified work, is 14 km away, but linked to the PLA Hospital, WHCDC and seafood market on Line 2 of the Wuhan metro:
https://www.wsj.com/articles/coronavirus-and-the-laboratorie... (contains link to google maps)
https://zenodo.org/record/4119263
https://zenodo.org/record/4119263/files/COVID%20Pandemic%20B...