The capture reaction $^{13}\mathrm{C}$($^{3}\mathrm{He}$,$\ensuremath{\gamma}$)$^{16}\mathrm{O}$ has been studied over an excitation energy range of 25 to 30 MeV in $^{16}\mathrm{O}$. The 90\ifmmode^\circ\else\textdegree\fi{} differential yield curve for the ground state transition shows resonances at ${E}_{x}=25.1, 26.0 \mathrm{and} 27.3$ MeV. The measured angular distributions are consistent with a spin and parity assignment of ${J}^{\ensuremath{\pi}}=1$--- to these states. The relation between this structure and that observed in the $^{15}\mathrm{N}$($p$,${\ensuremath{\gamma}}_{0}$)$^{16}\mathrm{O}$ reaction is discussed. The 90\ifmmode^\circ\else\textdegree\fi{} differential yield curves for the doublet transitions ${\ensuremath{\gamma}}_{1}+{\ensuremath{\gamma}}_{2}$ and ${\ensuremath{\gamma}}_{3}+{\ensuremath{\gamma}}_{4}$ were also measured. The former shows resonances at ${E}_{x}=26.0, 26.6, 27.2, 27.7, \mathrm{and} 28.6$ MeV, while the latter shows a broad resonance centered at ${E}_{x}\ensuremath{\simeq}27.5$ MeV with mild structure. Both curves suggest the existence of giant resonance strength built on the excited states of $^{16}\mathrm{O}$.NUCLEAR REACTIONS $^{13}\mathrm{C}$($^{3}\mathrm{He}$,$\ensuremath{\gamma}$)$^{16}\mathrm{O}$, $^{\mathrm{E}}3_{\mathrm{He}}$ = 3.0-8.5 MeV, measured $\ensuremath{\sigma}({\mathrm{E}}_{^{3}\mathrm{He}},{\mathrm{E}}_{\ensuremath{\gamma}},\ensuremath{\theta})$. $^{16}\mathrm{O}$ deduced resonances and structure in giant resonance region. Enriched $^{13}\mathrm{C}$ target.