No trip to Vienna is complete without a ride on the 19th-century Riesenrad or giant ferris wheel that features in &#x27;The Third Man&#x27;. It’s the only remaining work of British engineer Walter Basset who also built wheels for Blackpool, London and Paris. It was completed in 1897 to commemorate the Golden Jubilee of Franz Josef. A full circle in one of the 15 wooden gondolas takes a gentle 20 minutes, and at its highest point you are 65 metres (213 feet) up.