A more popular inn than the Hog's Head, the Three Broomsticks sits on the High Street in Hogsmeade. It is often warm, crowded, and a bit smoky - but clean and welcoming. A mirror behind the bar reflects the cozy atmosphere, and drinks are served in glasses and in pewter tankards.

Madam Rosmerta, the pretty and stylish owner, has been at the Three Broomsticks for at least twenty years, since Harry's father was a Hogwarts student. Harry and his friends enjoyed drinking butterbeers at the inn when they were students at Hogwarts, where they frequently encountered Hagrid as well. On less fortunate occasions they also met Rita Skeeter there, 'cause everyone loves the Three Broomsticks.

During the early stages of the second war with Voldemort, it seems the Death Eaters also thought The Three Broomsticks was an advantageous place to be. At some point during the 1996-1997 school year, Madam Rosmerta was placed under the Imperius Curse.

Under this curse, she spied on Dumbledore and reported information that was used to help Lord Voldemort in his quest to defeat Dumbledore and gain power over the magical world. She also unknowingly helped Draco Malfoy in his attempt to assassinate Dumbledore; first by putting Katie Bell under the Imperious Curse and giving her a cursed necklace to deliver to Dumbledore, then by sending a poisoned bottle of oak-matured mead to Hogwarts, also intended for Dumbledore. In both cases, the cursed or poisoned artifacts entered the wrong hands, seriously injuring innocent bystanders Katie Bell and Ron Weasley respectively.