1825 in history.
First modern railway opens in England.
Johann Strauss, Jr. is born. Chopin turns 15. Darwin starts studying medicine, but doesn't really like it.
Joseph-Nicéphore Niepce thinks of making the oldest surviving photograph, but other obligations keep him busy until the next year.
Aluminium discovered by Hans Christian Oersted. It is unclear what soda cans were made of prior to that.
The Russians bid farewell to the year 1825 with the Decembrist Uprising.
No worthwhile movies released.