About ten minutes' walk from Mishima station, Mishima Taisha is the town's largest and most important shrine. Between the main gate and inner gate there's a peaceful pond surrounded by shady trees, the compound is home to the main hall and a 1200-year-old osmanthus tree, and there's also a deer enclosure, a small museum of historical objects, and shops selling buddhist items, souvenirs and snacks.
The shrine is ten minutes' walk or so south-east from Mishima station.
I came to Japan from Manchester, England in 2003, and have travelled a lot since then, around Japan and in Asia. When I'm not working, I write satire and perform stand-up comedy in and around Tokyo. Check YouTube for a taste.