The mansion of the notary Isaac Spiegel was the first brick building in the central district of Proskuriv. For a long time Isaac lived in the Jewish quarters near the river. Gradually becoming rich, Spiegel made his old dream come true and in the early 1900s built a solid brick house in the prestigious central district of the city along Dvorianska Street. The mansion is made in the modernist architectural style. Nowadays the house has retained the curvilinear shapes of doors and window frames, a forged pattern, which is located on the balcony fence. Plant motifs were used for windows and balconies decoration. In Soviet times, it housed the regional book trade, and now - the Restaurant Spiegel, where you can enjoy cuisine of Podillia according to old recipes, interpreted in a new way.