Belying the stereotypes, Chartered Accountants' Hall has one of the quirkier interiors to be found in the City of London. Its library may have the expected bookcases, paintings and polished wood furniture - but it also has a bridge modelled on the Rialto in Venice.
1 Moorgate Place was built in 1890-93 by John Belcher. He had travelled extensively in Europe, and his studies there informed the Baroque Revival design. The whole of his building is wonderful, but the indoor bridge is unique in the UK.
Its strong Italian influence is rather appropriate, as double-entry bookkeeping was invented in Italy. Its grandeur was an assertion of confidence from a newly-professionalised body: the Institute of Accountants had been formed just twenty years earlier and the Royal Charter was granted as recently as 1880.
The building holds another surprise, too: behind the original Victorian rooms is a Great Hall built in the 1960s. This vast, modern space was created after the merger of several accountants' bodies had seen membership expand enormously in the 1950s. William Whitfield created a concrete hall uninterrupted by internal support columns but relieved by imaginative use of texture.
I visited Chartered Accountants' Hall with London Historians.