For more than 1,400 years, a church dedicated to St Paul has stood at the highest point in the City of London, Ludgate Hill. The first three burnt down but the current magnificent structure, masterminded by celebrity architect of the day, Sir Christopher Wren, has remained (almost) intact for nearly 400 years.
Seat of the Bishop of London and the mother church of the Diocese of London, the Grade I-listed national treasure has been at the centre of British religious and architectural history since its foundation centuries ago: it's a real gem and not just for tourists.