Around 1770 the neoclassical architect Robert Adam designed Pulteney Bridge, using as the prototype for the three-arched bridge spanning the Avon an original, but unused, design by Andrea Palladio for the Rialto Bridge in Venice. Thus, Pulteney Bridge became not just a means of crossing the river, but also a shopping arcade. Along with the Rialto Bridge and the Ponte Vecchio in Florence, which it resembles, it is one of the very few surviving bridges in Europe to serve this dual purpose. It has been substantially altered since it was built. The bridge was named after Frances and William Pulteney, the owners of the Bathwick estate for which the bridge provided a link to the rest of Bath.