Because a pointed arch points upwards, it makes people look upwards. In Gothic architecture, the whole building is designed to make people look up. There are long narrow columns, long narrow windows and high pointed roofs. On the inside the arches of the roof rise up like branches. On the outside, there are often lots of fancy bits along the edge of the roof and on the tops of buttresses and above the windows. These are called " pinnacles". Milan Cathedral has hundreds of them.