London covers 600 square miles and has a population of 8.6 million, but only its oldest part, just one square mile in size, is called the City of London. That is where the Romans founded the city of Londinium shortly after they arrived in 43AD. Today, the City of London – or simply “the City” – is the centre of London’s finance industry. The City is where you find the Bank of England, the London Stock Exchange, the investment banks, insurance companies and financial markets. It combines the most modern headquarters buildings with Roman remains and medieval churches, and it is great to explore on foot.

This year is a very good time to visit the spectacular Old Royal Naval College (ORNC), right in the heart of Greenwich, especially if you love royal and maritime history and architecture. In 2023 we are celebrating Wren 300. This is a commemoration of 300 years since the death of the great architect of the ORNC, Sir Christopher Wren, who gave his time for free when the building was commissioned in 1694. So what is the ORNC, and why should you include it on a visit to London?