Beeskafmarro (ビースカフマロ, Bīsukafumaro), presumably a city, is the location where the 288th Hunter Exam took place.
It is presumably a small city located somewhere in the Kukan'yu Kingdom[inference] and it is the site location of the 288th Hunter Exam.
Greed Island arc
Killua follows the instructions of the Kiriko and then a man named Michael that leads him to the 288th Hunter Exam location of the backroom of the Diksakura store. Killua easily passes the First Phase of the exam and because of it, is exempt from taking the exam any further and becomes a Hunter.