Structure you walk under or through while entering a settlement

I'm asking for the specific type of structure that you would see when entering a settlement. They are usually over the road and you have to drive under them.

Solution 1:

The first word that occurred to me was archway:

an entrance or passage formed by an arch

Solution 2:

It’s a gate to the city.

Photos of many such gates can be seen on Google Images. Search for “gate to the city.”

See also https://en.m.wikipedia.org/wiki/City_gate, which notes that:

City gates were traditionally built to provide a point of controlled access to and departure from a walled city for people, vehicles, goods and animals. . . City gates, in one form or another, can be found across the world in cities dating back to ancient times to around the 19th century.