'Jewel of the Sun' is quite popular. It's set in Ireland and has a beautiful blend of Irish folklore and a passionate romance.
'The Villa' is also a great Nora Roberts' historical romance novel. It has a story that spans different time periods. It starts in the present day but then delves into the past, specifically during World War II. The connection between the past and present through the villa and the characters' relationships is really fascinating. The historical details of the war - torn era are well - described, and of course, there's a lovely romance at the heart of it all.
Another one is 'Midnight Bayou'. It takes place in the South and has elements of mystery along with the historical romance. The atmosphere of the old plantation and the secrets it holds add to the allure of the story. There's also the complex relationship between the main characters that unfolds in a very engaging way. And it's really good at depicting the Southern culture and history.