Sendai aquarium (仙台うみの杜水族館) features a wide variety of marine life, dolphin & sea lion shows.
Take the JR Senseki Line from Sendai Station to Nakanosakae Station. From the square near this station there is a bus stop with a penguin picture where a free shuttle bus picks up visitors.
Shiogama Jinja is a Shinto shrine in the city of Shiogama, Miyagi Prefecture, in the Tōhoku region of northern Japan. Known from the ninth century, fifteen of its buildings have been designated Important Cultural Properties. It is the head shrine of several hundred Shiogama shrines located throughout Japan. [Wikipedia]