When the City of London's boundaries were clearly defined, Temple Bar was one of eight entrances. The Portland stone arch, reputedly designed by Sir Christopher Wren, was completed in 1672 and is the only surviving gateway to the City. The others, Aldgate, Aldersgate, Bishopsgate, Cripplegate, Ludgate, Moorgate and Newgate, had all been demolished by the end of the eighteenth century. Towards the end of the nineteenth century Temple Bar had become a cause of congestion and was taken down. In November 2004, the Temple Bar returned to the City of London and is a gateway into Paternoster Square. London is at the heart of the world's financial markets and Temple Bar Advisory provides access to these markets through specialist advice in financial markets communication.