Walking into the interior, under the majestic appearance, a delicate church greets you. The stained glass on the four walls with the characters of the Bible is particularly dazzling under the golden light. It is truly a world cultural heritage. When people walk into it, they are awe-inspiring, sitting in the corner and watching everything here, a silent The power surrounds me, solemn, and feels that time is still. Come to the side door on the left side of the church and spend 4 euros to get to the spire of the highest point of Cologne Cathedral, overlooking the whole city of Cologne.