Marie Curie conducted most of her research in Paris.
Curie moved from Warsaw to Paris in 1891 to study physics, chemistry, and mathematics at the University of Paris, now part of Sorbonne University. Paris became the center of her scientific career and the place where she met Pierre Curie, whom she married in 1895.
In Paris, the Curies investigated the unusual radiation emitted by uranium minerals. Their work led to the discovery of polonium and radium, and Curie coined the term “radioactivity.” Much of this research was carried out in a poorly equipped shed associated with the École supérieure de physique et de chimie industrielles.
A common mix-up is choosing Warsaw because Curie was born there and remained deeply connected to Poland. She named polonium after her homeland, but her major academic and laboratory work took place in Paris. She later founded the Curie Institute in Paris, which became a major center for medical and radiation research.