Summer in Vienna, part two The Riesenrad is a wonderful example for 19th century engineering. People sometimes compare it unfavorably to the London Eye, which is twice its height. But think of it this way: It's only a few years younger than the Eiffel Tower, and it moves. I just stood there and thought how I envied that najad. The so-called Roman Ruin isn't actually Roman. It was built in the 18th century. Ugh! A baroque garden. What a cruel way to treat mother nature! The parks behind the castle are quite extensive, and beautiful, once you get past the baroque rosebeds and trees aligned with military precision.