Dommuseum

Yet another patchwork of architectural styles, but predominantly Gothic. None of the original construction remains, the oldest extant sections are the thirteenth century Giant Gate (Riesentor) and Towers of the Heathens (Heidentürme), both of which are Romanesque. In 1511, building in Gothic style ceased due to being out of fashion. The main altar has a Baroque panel showing St. Stephen, Christianity's first martyr. The organised tour is worth it, since some of the finest works of art in the cathedral can only be seen with a guide, such as Emperor Frederick III's red marble sepulcher and the immense Gothic carved Altar of Wiener Neustadt. Those interested in attending Mass may come Saturdays at 7PM for an English service.

This is the Viennese residence of Austria's most famous composer, Wolfgang Amadeus Mozart, and a branch of the Vienna Museum.

A 13th-century subterranean chapel beneath the former Chapel of St Mary Magdalene (no longer standing, but outlines have been traced on the pavement directly south of Stephansdom). This chapel served as the tomb for a wealthy Viennese family and was completely forgotten until construction of the underground in 1975. A portion of it can be viewed for free from a window in the U-Bahn station.

The remaining midsection of a medieval nail tree (Nagelbaum). Over the centuries hundreds of nails have been hammered in both in thanksgiving and for good luck. The tree figures in a number of local legends.

It has a small boulder place and some interesting structures to lead climb on.

A large 4-m-diameter musical clock on a pedestrian bridge connecting two neighboring buildings. The clock was designed between 1911 and 1914 by the Judgenstil painter Franz Matsch, and features prominent figures from Viennese history, each with a Roman character. At noon all figures parade across the clock face, accompanied by music. During the Advent season, Christmas songs are played daily at 17:00 and 18:00.