In the UK television show Dragon's Den, entrepreneurs present their business pitches in the room called the Den.
The name is the programme's central visual and verbal idea. Contestants enter the Den, stand before the investor panel and explain what their company does, how much money they want and what equity they are prepared to offer. The Dragons then question them across the pitch area.
The setting is not merely a generic television studio label. The programme's title, language and presentation all use the idea of a den to frame the Dragons as powerful business figures whose reactions can determine whether a proposal progresses. The room has changed in appearance across series, but the name has remained part of the format.
The Boardroom is a common wrong answer because it is associated with business meetings and other reality programmes. In Dragon's Den, the canonical name is simply The Den, with the definite article included.