On the hill adjacent to the hotel, there is Hie Shrine, which has a rich forest.
As the town of the imperial city, Hie Shrine protects the center of Japan. In 1659, it was moved to Star Hill, a scenic spot overlooking the pond, and has continued to this day. The shrine building was burned down in the Great Tokyo Air Raid in 1945, but it was rebuilt in 1958 by the "Showa Gozoei" project.
Every June, the Sanno Festival, which is known as one of Japan's three major festivals and the first of the three major festivals in Edo, is held. In recent years, it has also been known as one of Tokyo's leading "power spots", and there is no end to people praying for directions, bad luck, marriage, childbirth, and safe childbirth.

The Treasure Hall, which houses the treasures of Hie Shrine, was built the year after the 500th anniversary of the shrine's establishment within Edo Castle in 1978, as a commemorative project. In addition to 31 swords, some of which are national treasures and important cultural properties, the shrine also houses many treasures related to the Tokugawa Shogunate.

On both sides in front of the main shrine, there are statues of a married couple of divine monkeys who are the messengers of Hie Shrine. On the right is a male monkey, and on the left is a female monkey holding a baby. The male monkey is worshipped by those praying for prosperity in business, and the female monkey is worshipped by those praying for safe childbirth and fertility.