The Telegraph posted a nice photo gallery of "the world's most beautiful currencies." One of my favourites is the bill from French Polynesia.
Although security is an important consideration in the design of currency, I also like the idea of using bank notes as marketing--to promote a country by showing off its beautiful scenery, historic figures and distinctive architecture. Click through and see how bank notes can help build a country's brand.
Update: India just chose a new symbol for its currency, the rupee (symbol is at left). The goal was to "Formalise a symbol for the Indian Rupee which reflects and captures Indian ethos and culture" on the world stage, according to the Finance Minister. Even the symbol for currency serves a marketing purpose.
