Toi Gold Museum
The museum displays reconstitutions of the manufacturing process for gold during the Tokugawa era, ancient artifacts from the period, explanatory exhibitions about gold processing, and an exhibit of various gold ores from various places throughout Japan.
The museum received some fame for housing the world's largest gold bar, weighing 250 kilograms (550 lb), and representing a 2016 value of about 1.1 billion yen (US$9.7 million). The bar obtained an official Guinness record certificate for "The largest manufactured pure gold bar":
- The Japan Journal: "Three Diamonds Cast Gold-Medal Gold Bar" (November 2005). Retrieved on 18 August 2009
- The Japan Times: "Mitsubishi makes record-size gold bar" (17 January 2005). Retrieved on 18 August 2009
- Guinness World Records certificate at Toi Mine Museum
- Official website (in Japanese)