Kediri is actually an ancient city, much older than Jakarta or even Surabaya. It was the centre of an ancient Javanese kingdom as far back as the 9th century and played a big role in the history of the world's most populous island. While quite a bit remains of the city's colonial heritage, for ancient history the best you can do is this small meditational cave, located about 3 kilometres from the centre of Kediri (just hop in a becak.) Inside the cave are some Buddhist carvings from the 9th century. There is a small on-site museum alongside. It is a modest site but lovers of history might enjoy it.
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