We report on an unique optical method which facilitates detection of ferroelectric (FE) domain orientation on the subwavelength scale. The FE material of interest is decorated with Au nanoparticles of 100 nm diameter and then completely covered with a thin film of birefringent liquid-crystal (LC) molecules. The latter align to the FE surface in accordance to the domain-specific electric stray field, which causes a characteristic spatial orientation of the dielectric tensor ε̂m of the LC layer. As their spectral response strongly depends on the dielectric constant of the surrounding medium, the embedded Au particles are used as nanoscale optical antennas revealing either an intensity, a polarization, or a spectral contrast. This technique provides an ultrafast optical read-out mechanism for detecting antiparallel oriented FE domains with subwavelength resolution.