Japan, like the United States, is broken up into regions. First, the islands/chains: Honshu, Hokkaido, Kyushu, Okinawa, and Shikoku. Then, Honshu, the largest of the islands, is split into smaller regions: Tohoku in the north, Kanto near and including Tokyo, Chubu around the middle, Kansai around Kyoto and Osaka, and Chugoku in the west including Hiroshima. These regions are then broken up into governmental prefectures and cities.
Tohoku is most known these days as the region that includes Fukushima and the nuclear power plant, and it is the area that was hardest hit by the earthquake and tsunami. But that notoriety aside, it's a largely rural area with skiing and some history. The region has some great sights, but they take time to reach and are fairly off the tourist-beaten path. There are two notable exceptions: Matsushima and the Aizu-Wakamatsu area. (Okay, there are more, but I've only visited those two so far.)
Sendai is known for its gyu-tan - beef tongue. It's grilled similar to yakitori (just like we grill meat on barbecue grills in America) and I'm sure it's seasoned. Unfortunately I couldn't bring myself to try it (time was a factor, too) when I was there, but maybe next time - and I'm sure there will be a next time. If even for just a weekend. It is pretty close to Tokyo if you take the bullet train, after all.
I'm not sure what else can be said for Sendai. There is a shopping mall and shopping street, department stores, and restaurants near the station. For a city that suffered a major earthquake a couple years before, it was in great shape, though. And it is a good starting point for a tour around Tohoku.