The director instructed the actors to break the fourth-walls at key moments to involve the audience.

The town built new sea walls after the last hurricane to protect low-lying neighborhoods.

The surgeon inspected the thoracic walls carefully before closing the incision.

The museum's restoration plan focused on preserving the dead walls that still bore traces of the original frescoes.

Modern high-rise buildings often rely on shear walls to provide lateral stability during earthquakes.

The haunted house's warped walls seemed to breathe whenever the wind howled through the rafters.

During the surgery, the doctors inspected the patient’s chest walls for signs of trauma.

Domain walls formed between regions of different magnetization in the thin film.

The crew inspected the ladder walls before the concert to ensure the lights were secure.

Several contemporary directors intentionally blur fourth walls to create a more immersive and self-aware performance.