In Spire you are in a suborbital airport that is on a raised Spire. This is a way that a futuristic society enables faster travel around the earth.
The overall design is clean and futuristic with a wide range curved edges that push you through the airport. This is familiar for anyone who's been in a modern airport, but it is futuristic.
There are over watch positions in this map to really build out the sniper opportunities. Another lane focuses on "meaty cover" which will allow you to engage in a more position to position battle.
There is also an outer wall for wall-running like in Combine, but this time there is a destination at the end. You will need to run this route if you want to take one of the points in objective games.