在鎮北坊文化園區的自強街巷弄裡，有著一口被稱為「烏鬼井」的三級古蹟。傳說此井水源旺盛、取用不竭，在西元1653年開鑿後至今仍然有水，當時是來往船隻及當地人的飲用水。據說由前來的東印度公司中的荷蘭人帶著黑奴前來開挖，因當時台灣人並沒有看過皮膚黝黑的黑人，因此稱呼為烏鬼，也成為這口井的名稱由來。後來到了日治時期井水漸漸少人取用，加上常有人意外跌落，日人便將井口封住掩埋，直到西元1955年才在考古工作中挖掘修復。
寶盒就在井附近，想拜訪這個景點騎機車會是個好選擇，車子可能開不進來，這裡很靠近附近住家，請小心別打擾到麻瓜！
Down an alley on Zigiang Street, there is a 3rd grade historic site, Black Ghost Well(烏鬼井). It is said that the well had always provided an abundant support of water. Dug in 1653, it still has water to this day. In early times, it was a water source for both passing ships and local residents. It is said that the well was dug by black slaves brought to Tainan by the Dutch East India Company in the 1600s. As people in Taiwan had never seen dark-skinned people before they were called "black ghosts”, and this was also the name given to the well. In the Japanese Colonized Period, less and less people took water from the well and there were always some cases of people falling in, so the Japanese sealed the well and buried it. It was found and restored when archaeological work was carried out in 1955.
The cache is near the well. Car may not be able to enter this narrow alley, scooter is a good choice to visit this spot. Here is very closed to the residential houses. Be careful not to bother the muggles!