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St Mary Aldermary is an Anglican church in Bow Lane in the City of London. Of medieval origin, it was rebuilt from 1510. Badly damaged in the Great Fire of London in 1666, it was rebuilt once more, this time by Sir Christopher Wren, unlike the vast majority of his City churches in a Gothic style.
Grade I listed building. Link

Sir Christopher Wren was Commissioned with rebuilding a number of the Churches destroyed in the City of London, by the Great Fire of London. His office rebuilt 51 churches, not all survive.
See Link for a list of churches.
Google map of their location: Link

Grade I listed buildings and structures are of exceptional, even international importance. There are over 6,000 in the country. Only 2.5% of listed buildings are Grade I listed.
In Scotland the classification is Category A
Index: Link