The Sentinel is a sculpture on the Chester Road roundabout at the entrance to the Castle Vale housing estate.

Created by Tim Tolkien, it depicts three half-scale supermarine spitfires soaring skywards. The aircraft are cast in aluminium and supported by steel beams that represent their vapour trails.

Castle Vale was built on the site of a former aerodrome where spitfires were tested. The sculpture was unveiled by Alex Henshaw, its chief wartime test pilot, in 2000.