During the day you can overlook to the Seto Inland Sea.

Once for a fee in the month, an event that can astronomical observations in diameter 60cm telescope will be held.
Date and time, please check the official site.

Parking is also on the top, but in the case of full car because there is a limited number will climb to walk from the parking lot of under about a 7-minute walk.

Since the business hours and regular holiday is not, you can at any time astronomical observation.

Bisei Observatory away about 5km has business hours and the regular holiday.