The Mint Museum converted a building originally built as a thermal power plant in 1911 (Meiji 44). The brick exterior was maintained throughout the transformation to this date. In 1969, the museum opened to the public to display valuable coins and other items stored by the Mint. Later, with the motto of "a people-friendly, environmentally friendly, and attractive museum," the museum introduced the latest techniques to its exhibits and facilities to make it more accessible. As a result, the museum underwent a major renovation and reopened in April 2009.
The museum displays valuable items such as gas lamps, balances, and other items made at the Mint when it was first established, sample coins, polar seals, and the first Hepburn Japanese-English dictionary in Japan. Another major part of the museum is coins manufactured by the Mint, including rare and valuable old coins such as large and small coins, items from the Mint's establishment. Other unique items on display include metal artifacts made with the Mint's medal manufacturing technology, medals from the Tokyo Olympics (1964) and Nagano Olympics (1998) and National Medal of Honor shields.
Every year around mid-April, the Mint holds a week-long "Cherry Blossom Walk-through.” A 560-meter corridor along the river running through the Mint is open to the public, where 336 cherry trees of 137 species (as of 2021) are in full bloom. Tens of thousands of people visit every year, and the area is crowded with food stalls selling festival foods. It is one of Osaka's most famous cherry blossom viewing spots and one of the “Japan’s Top 100 best cherry blossom spots.”