Two-dimensional photonic crystals (PCs) consisting of a triangular array of titania rods with a lattice constant of 400 to 500nm were fabricated by sol-gel processing using polymer molds. In this synthesis, the use of electron beam lithography and dry-etching techniques was indispensable. The optical properties of the PCs were measured by a reflection method, and a distinct reflection peak in the visible region was observed. The wavelengths at which the reflection peaks appeared were confirmed to well agree with those theoretically predicted for the PCs.