Conversation so far:
What can you tell me about the structure of the buildings at Broadmoor Hospital?
Much of Broadmoor Hospital's architecture is still Victorian, including the gatehouse, which has a clock tower.
Much of Broadmoor Hospital's architecture is still Victorian in what way?
Typical of hospitals built during the Victorian era, Broadmoor Hospital consists of a collection of T-shaped buildings, characterised internally by L- and T-shaped corridors.

Question: What is the most important aspect of this article?
Self-contained rewrite: What is the most important aspect of the Broadmoor Hospital article?