stopover point; relay point; transit point
A place used as a stopover or transfer point during a journey, such as a transit hub or a relay station.
This airport is often used as a stopover point for flights to Europe.
During the long journey, a small town became our stopover point.
中継 is the act of relaying or broadcasting, while 中継地 is the physical location where the relay or stopover occurs.
Compound of 中継 (relay, stopover) and 地 (place, land).