Cisluna refers to the space between the Earth and the orbit of Luna, and any habitats or orbitals there. In the Interplanetary and Solsys Golden ages, the Cislunar Alliance was one of the major interplanetary superpowers.
The Cislunar volume in the Current Era is home to a large number of tourist hotels and observation platforms, dedicated to watching the planet Earth from outside GAIA's exclusion zone. A very small number of tourists and other observers are allowed to visit the Earth each year, by invitation only.