  We present deep F606W, F814W ACS photometry of the recently discovered
globular cluster B514, the outermost known globular in the M31 galaxy. The
cluster appears quite extended and member stars are unequivocally identified
out to ~200 pc from the center. The Color Magnitude Diagram reveals a steep Red
Giant Branch (RGB), and a Horizontal Branch (HB) extending blue ward of the
instability strip, indicating that B514 is a classical old metal-poor globular
cluster. The RGB locus and the position of the RGB Bump are both consistent
with a metallicity [Fe/H] ~ -1.8, in excellent agreement with spectroscopic
estimates. A preliminary estimate of the integrated absolute V magnitude (M_V<
-9.1) suggests that B514 is among the brightest globulars of M31.
