Spatial distribution of our selection for the ten clusters in heliocentric Galactic coordinates. The color scale is proportional to volume density, accentuating the dense central regions of the populations. In this view, the Sun is located at the origin, and the directions toward the Galactic center (positive X) and of the generic Galactic rotation (positive Y) are indicated with arrows. Cluster cores are surrounded by enormous stellar coronae with sizes up to several hundred parsec. In addition, we observe a characteristic pattern where extended cluster populations form elongated shapes whose leading arm is tilted toward the inner Galaxy. An interactive 3D version of this figure is also available online.