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We investigate the high-energy photon emission around Gamma-Ray Burst (GRB)remnants caused by ultrahigh-energy cosmic rays (UHECRs) from the GRBs. Weapply the results to the recent report that the supernova remnant W49B is a GRBremnant in our Galaxy. If this is correct, and if GRBs are sources of UHECRs, anatural consequence of this identification would be a detectable TeV photonemission around the GRB remnant. The imaging of the surrounding emission couldprovide new constraints on the jet structure of the GRB.Comment: 12 pages, 2 figures, accepted for publication in ApJ

Extended GeV-TeV Emission around Gamma-Ray Burst Remnants and the Case of W49B