Unigoya Takanobaba Honten is a seafood restaurant specializing in sea urchin, located a five-minute walk from Takadanobaba Station in Tokyo. It serves additive-free brine-preserved sea urchin and offers both comparisons of sea urchin from different regions and creative sea urchin dishes. The regional comparison menu comes in sets of three or four types, allowing diners to compare differences in taste. Portions are small, so filling up requires ordering several dishes.