Mountain temple overlooking the small Inohana lake. Check out the Deva statues at the gate. This is an excellent place if you're in town during cherry blossom time, and if you miss it, check out the Hantoshi-zakura cherry blossoms which are in bloom from mid-autumn to early spring.
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摩訶耶寺
Here you will find the oldest garden in the prefecture, reminiscent of Kyoto's Koke-dera. The temple was built in 726 and contains some important cultural artifacts. Especially impressive is the wooden statue of Senju-Kannon with one thousand arms.
方広寺
This Zen temple, nestled among pines, sakura, peach, and other things, was established in 1377 and is the home of the Rinsai Sect, housing three much-revered Buddha statues. With over sixty halls, it is one of the biggest temples in the Tokai area. The small Shichison Bosatsudo is the oldest wooden building in the prefecture and a fine example of 14th century Japanese architecture. Visitors can walk through the buildings- no shoes allowed.
浜名湖遊覧船, Hamanako Yūransen
This ferry runs between Kanzanji Hot Spring and Mikkabi-cho, giving some nice views of Lake Hamana. The round trip takes about an hour.
長楽寺
This temple, built at the start of the Heian era, has a charming garden with plum trees, and is especially beautiful with the change of the leaves in the fall.
竜ヶ岩洞, Ryugashidou
One of the largest and most famous caves in Japan. The first 400 m of the 1000-m limestone cavern are open to the public. Stalactites and stalagmites abound, and the centerpiece is a 30-m underground waterfall. This cave stays about 15°C year-round, making it a great place to cool off during the sweltering summer heat.
浜名湖オルゴールミュージアム, Hamanako Orugoru Myujiamu
The collection includes dozens of self-playing orgels and music boxes from around the world. Performances begin hourly at 20 after the hour, and there is also a special hands-on exhibit. The view of Lake Hamana from outside the museum is spectacular as well.