Banking

“Compound interest is the eighth wonder of the world. He who understands it, earns it; he who doesn’t, pays it.” — attributed to Albert Einstein

The formalisation of banking — lending, credit, and financial instruments — transformed money from a simple medium of exchange into a productive force. Capital could now be accumulated, invested, and multiplied, funding ventures that would otherwise be impossible.

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• Buildings: Bank

Historical Background

Banking in its modern form emerged in medieval Italy, where the great merchant families of Florence, Venice, and Genoa developed sophisticated financial instruments. The word “bank” itself derives from the Italian “banca,” the bench upon which moneylenders conducted their business. The Medici Bank, founded in 1397, became one of the most powerful financial institutions in Europe, funding popes, kings, and the Renaissance itself.

Medieval bankers invented many of the instruments that still underpin modern finance: bills of exchange allowed merchants to transfer funds across borders without physically moving gold; letters of credit enabled long-distance trade; and double-entry bookkeeping, formalised by Luca Pacioli in 1494, gave merchants and states a clear picture of their financial position. The Knights Templar operated an early international banking network, allowing pilgrims to deposit funds in Europe and withdraw them in the Holy Land. Banking concentrated capital, enabling investment in large-scale enterprises — from trade expeditions to public infrastructure — that no individual could fund alone.