Spanning the gap

I want suggestions and you guys have always had good ones.

I have two buildings 150 feet apart with a road going between them. I want to get the high speed internet service that just became available (fiber) and supply the service to both buildings. Both buildings have heavy metal roof. Putting the service on a router with WiFi won't work by default.

Suggestions?

My first thought was a WiFi antenna I can have in an outer room on a router and put a hard line into the building to the computer (which is conveniently in the center). I don't even know if such an antenna exists. Never had to set up a network WiFi before so I am at a loss.

Thanks for your time and any ideas you might have.