Or just history as a whole?????
Also maybe the late 19th century - early 20th century.
I very much like Russian history.
For example, the reign of Alexander I (1801-1825) is of interest.. and also that of Catherine the Great (1762-1796).
Otherwise, I am very curious about pre-historic times, such as from the creation of the Earth 4 billion years ago and onwards. The Mezozoic era (the dinosaurs), as well as what was both before and after it.