Ludgate Hill in the context of First millennium

Sir Christopher Wren FRS (/rɛn/; 30 October 1632 [O.S. 20 October] – 8 March 1723 [O.S. 25 February]) was an English architect, astronomer, mathematician and physicist who is one of the most highly acclaimed architects in the history of England. Known for his work in the English Baroque style, he was accorded responsibility for rebuilding 52 churches in the City of London after the Great Fire in 1666, including what is regarded as his masterpiece, St Paul's Cathedral, on Ludgate Hill, completed in 1710.

The principal creative responsibility for a number of the churches is now more commonly attributed to others in his office, especially Nicholas Hawksmoor. Other notable buildings by Wren include the Royal Hospital Chelsea, the Old Royal Naval College, Greenwich, and the south front of Hampton Court Palace. Educated in Latin and Aristotelian physics at the University of Oxford, Wren was a founder of the Royal Society and served as its president from 1680 to 1682. His scientific work was highly regarded by Isaac Newton and Blaise Pascal.

St Paul's Cathedral, formally the Cathedral Church of St Paul the Apostle, is an Anglican cathedral in London, England, the seat of the Bishop of London. The cathedral serves as the mother church of the Diocese of London in the Church of England. It is on Ludgate Hill at the highest point of the City of London. Its dedication in honour of Paul the Apostle dates back to the original cathedral church on this site, founded in AD 604. The high-domed present structure, which was completed in 1710, is a Grade I listed building that was designed in the English Baroque style by Sir Christopher Wren. The cathedral's reconstruction was part of a major rebuilding programme initiated in the aftermath of the Great Fire of London. The earlier Gothic cathedral (Old St Paul's Cathedral), largely destroyed in the Great Fire, was a central focus for medieval and early modern London, including Paul's walk and St Paul's Churchyard, being the site of St Paul's Cross.

The cathedral is one of the most famous and recognisable sights of London. Its dome, surrounded by the spires of Wren's City churches, has dominated the skyline for more than 300 years. At 365 ft (111 m) high, it was the tallest building in London from 1710 to 1963. The dome is still one of the highest in the world. St Paul's is the second-largest church building in area in the United Kingdom, after Liverpool Cathedral.

Paternoster Square is a former historic square, renamed from Newgate Market c. 1872, and now a post-war urban redevelopment next to St Paul's Cathedral in the City of London. The area was previously named Paternoster Row, after the street of the same name, once centre of the London publishing trade and was devastated by aerial bombardment in The Blitz during World War II. It is now the location of the London Stock Exchange which relocated there from Threadneedle Street in 2004. It is also the location of investment banks such as Goldman Sachs, Merrill and Nomura Securities, and of fund manager Fidelity Investments. The square itself, i.e. the plaza, is privately owned public space. In 2004, Christopher Wren's 1669 Temple Bar Gate was re-erected here as an entrance way to the plaza.

The square is near the top of a modest rise known as Ludgate Hill, formerly one of the two highest points in the City of London. It is characterised by its pedestrianisation and colonnades.

Old St Paul's Cathedral was the cathedral of the City of London that, until the Great Fire of 1666, stood on the site of the present St Paul's Cathedral. Built in 1087 and from 1255 to 1314, it was dedicated in honour of Paul the Apostle. The building was perhaps the fourth such St Paul's cathedral church at this site on Ludgate Hill, going back to the 7th century.

Work on the cathedral began after a fire in 1087, which destroyed the previous church. Work took more than 200 years, and over that time the architecture of the church changed from Norman Romanesque to early English Gothic. The church was consecrated in 1240, enlarged in 1256 and again in the early 14th century. At its completion in the mid-14th century, the cathedral was one of the longest churches in the world, had one of the tallest spires and some of the finest stained glass.