Why do they call it a cellar door, you ask? It's actually a mixture of two words. The phrase "cellar door" is most likely a combination of "cellar" and "door." It sounds so pretty that many people associate it with the film 'Donnie Darko'. Cellar doors can be either flat or angled, and they are usually locked. Whether the door is flat or angled, its purpose is still the same - to provide access into the cellar.
Historically, cellars were underground winery areas. They kept their wines cool using oak barrels or bottles. Eventually, the cellars became large rooms, where customers could buy directly from the wineries. Today, a cellar door is the entrance to a winery that offers tasting and sales of its wines. This term has a lot of meaning in the wine world, but is mainly associated with Australia.
Many homes have basements. If you have a basement, a cellar door is an excellent solution for emergency access. It provides another way in or out during a storm, and provides a way to move heavy objects if needed. It also secures the bulkhead, which is the entry point to the basement. It's a valuable addition to any home and will give you peace of mind.