Webdiscover the historic downtown charm of wallingford and the myriad experiences it promises to every visitor and resident alike. A glimpse into wallingford's. Webwallingford castle is a medieval castle situated in wallingford in the english county of oxfordshire (historically berkshire), adjacent to the river thames. Webuncover the secrets of wallingford’s past and embark on a captivating adventure through time at the museum! Webwallingford, steeped in history and enriched with cultural heritage, offers an enchanting escape for visitors seeking a blend of past and present. Websince 1999 the site has been known as the american silver museum at the johnson mansion. From the early 1800s, wallingford and meriden were recognized as the center. Webhistoric wallingford is celebrating our “reopening” from the pandemic with a neighborhood treasure hunt.