port of call
port of call {n. phr.}
1. Any of the ports that a ship visits after the start of a voyage and before the end; a port where passengers or cargo may be taken on or put off; an in-between port.
Savannah is a port of call for many Atlantic coasting vessels.
2. A place you visit regularly or often; a stop included on your usual way of going.
It was an obscure little restaurant which I had made something of a port of call.
His home had become one of my regular ports of call in Boston.
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Source: A Dictionary of American Idioms