St. Peter's Square (Piazza San Pietro) is a large plaza located directly in front of St. Peter's Basilica in the Vatican City, the papal enclave inside Rome, directly west of the neighbourhood or rione of Borgo.
At the centre of the square is an ancient Egyptian obelisk, erected at the current site in 1586. It was made of red granite and is 25.5 metres tall. The obelisk was originally erected at Heliopolis, Egypt, by an unknown pharaoh.
Gian Lorenzo Bernini designed the square almost 100 years later, including the massive Tuscan colonnades, four columns deep. A granite fountain constructed by Bernini in 1675 matches another fountain designed by Carlo Maderno in 1613.
References:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.