Riften 5

Riftan Five was a location Leela and the Doctor visited and got lost for three days.

Leela thought she recognized Riftan Five from a photo of River Song uploaded to Bookface of her and the Eleventh Doctor running from the Judoon. The Judoon later caught up with River and the Doctor on level 17 of an underground bunker because River forgot to turn the location off on her Bookface account. (COMIC: Timeliney Wimey)