Here at Curbed celebrity real estate is a dime a dozen, from tales of woe, to multimillion-dollar transactions, to sports stars trading one massive mansion for another. How can one make sense of all these famous people buying and selling properties? Enter the Celebrity Real Estate Heat Map. Below, please find the 20 hottest stories of the summer, from Mariah Carey's massive rental on Long Island to Robin Williams' $35M Napa vineyard. Of course, NYC and Los Angeles are veritable epicenters of celebrity real estate madness, so be sure to zoom in on those cities closely. For more, head over to the detailed celebrity roundups from each Curbed city. See someone missing? Leave 'em in the comments.

· All Celebrity Heatmaps [Curbed National]
· Here Now, Celebrity Heatmaps Around the Curbed Universe [Curbed National]