The bridge is a nautical term for where the ship is commanded. Typically, on a cruise ship at least, the bridge is located on one of the upper deck levels on the bow of the ship, and is strictly accessible to crew members only. On a Quantum-class ship, the bridge platform provides the crew members with an almost 360 degree vision across the ship.
From the bridge, the navigational, security and day to day operation of the ship is performed, segregated in different rooms but always accessible. Cameras are also littered across the ship, allowing the security members in the bridge to monitor the daily on-goings remotely.
As I have never ever visited the bridge of a ship (the only bridge I've ever been on is the one on a canal boat!), let alone a cruise ship of this size, I can't conclusively say it is the best cruise ship bridge there ever was, but I was still very impressed. From the thoughtful layout, and the amount of comfortable space to work in (doubly important in an emergency), the bridge on the Quantum-class Anthem of the Seas ship matches the rest of the ship in its space and technology.