The two jet-black doors of the main entrance are planed and carved from two single pieces of Taiwan cypress. They are never closed, even when typhoons strike, to show that the Office of the President works all the year round.
兩扇漆黑大門是整塊台灣大檜木刨雕而成，從來不關，即使連颱風來襲也一樣，表示「全年無休」。