Sendai Castle (Aoba Castle) was the residence of Date 620,000 goku. The castle was built at an elevation of 130 m above sea level, with cliffs to the east and south. It is said that the castle did not have a castle tower to avoid the warnings of Shogun Tokugawa Ieyasu. Unfortunately, the castle is now gone, and the reconstructed side turrets are a reminder of bygone days. If you stand in front of the statue of Masamune Masamune's cavalryman, you can view the city of Sendai from the same vantage point as Masamune, who was ambitious to conquer the whole country.

At the Aoba Castle Museum and Exhibition Hall, visitors can view computer-generated images of a reconstruction of Aoba Castle. In the summer of 2003, Aoba Castle was designated as a National Historic Site.

The area around the ruins of the castle is Aobayama Park, and from the ruins of the castle's main citadel, you can enjoy a panoramic view of Sendai City and the Pacific Ocean. In front of the bronze statue of Bansui Doi, an automatic performance of "The Moon over the Deserted Castle" is played every 30 minutes from 9:00 to 18:00. From the castle tower, visitors can enjoy the night view of Sendai, a city of one million.