PowerMap is an Excel add-in originally named GeoFlow that allow us to visualize data in a 3D map.
To use PowerMap you only need to download the add-in from here and install it.
After the installation your will see in your Insert tab in Excel a new option name Map
To use it you only need to select a set of data that include geo localization data like city, country, longitude, latitude, etc. For example.
And click the Map option in the Insert Tab and you will be able to create data visualization like this.
if you want to try PowerMap I recomend you to download some of the sample data sets that you can find here