Brown's Gatehouse (also known as the Dean's Eye) in Wells, Somerset, England, is an entrance gateway into a walled precinct, the Liberty of St Andrew, which encloses the twelfth century Cathedral, the Bishop's Palace, Vicar's Close and the residences of the clergy who serve the cathedral. Brown's Gatehouse has been designated as a Grade I listed building and Scheduled Ancient Monument. It is a two-storey archway of Doulting ashlar stone, with a Welsh slate roof with coped gables behind parapets. The arch has a ribbed vault. There is a doorway within the porch to a staircase to the first floor.