Starport Kaguya is the main spaceport on the Lunar surface. It allows access to the colony of Heinlein. Travellers from Earth reach the Moon by passing up the Beanstalk and taking the Challenger Memorial Ferry from the Castle to Starport Kaguya. Based on the card text of Shipment from Kaguya, the Weyland Consortium makes use of Kaguya for shipping unlabeled, unidentified crates.
This location is named after Princess Kaguya, a character in a 10th century Japanese folktale. Princess Kaguya was a member of a civilisation based on the Moon.