The Ringstraße is a circular road surrounding the Innere Stadt district of Vienna, Austria and is one of its main sights. It is typical of the historical style called Ringstraßenstil (Ringstraße Style) of the 1860s to 1890s.
The street was built to replace the city walls, which had been built during the 13th century and reinforced as a consequence of the First Turkish Siege in 1529, and instead of the glacis, which was about 500m wide. The fortification had been obsolete since the late 18th century, but the Revolution of 1848 was required to trigger a significant change. In 1850, the Vorstädte (today the Districts II to IX) were incorporated into the municipality, which made the city walls a simple impediment to traffic. In 1857, Emperor Franz Joseph I of Austria issued his famous decree "It is My will" (Es ist Mein Wille at Wikisource) ordering the demolition of the city walls and moats. In his decree, he laid out the exact size of the boulevard, as well as the geographical positions and functions of the new building. The Ringstraße and the planned buildings were intended to be a showcase for imperial Habsburg grandeur and the glory of the Austro-Hungarian Empire. On the practical level, Emperor Napoléon III of France already demonstrated with his boulevard-building in Paris how enlarging the size of the streets effectively made the erection of revolutionary barricades an impossibility.

Since the Ringstraße had always been meant primarily for show, a parallel Lastenstraße (burden road) was built on the outside of the former glacis. This street is commonly known as 2-er Linie, named after the index "2" in the identifiers of the tram lines which used it. It is still important for through traffic. After some disputes about competence between the government and the municipality, a "City Extension Fund" was created, which was administered by the government. Only the town hall was planned by the city. During the following years, a large number of public and private opulent buildings were erected. Both nobility and the moneyed aristocracy rushed to build showy mansions along the street. One of the first buildings was the Heinrichshof, owned by the beer brewer Heinrich Drasche, which was located opposite the opera house until 1945.

The only sacred building is the Votivkirche, which was built after Emperor Franz Joseph had been saved from an assassination attempt in 1853. The Hofburg was extended by an annex, the Neue Hofburg (New Hofburg), which houses the Museum of Ethnology and the Austrian National Library today. On the other side of the street, there are the Kunsthistorisches Museum (Museum of Art History) and the Naturhistorisches Museum (Museum of Natural History), which were built for the imperial collections. Originally, there should have been a parallel wing opposite the Neue Hofburg, which would have been attached to the Museum of Natural History. The Heldenplatz and the Maria-Theresien-Platz would have become the Kaiserforum. However, that plan was shelved for lack of funds. The construction ended only in 1913 with the completion of the Kriegsministerium (Ministry of War). At that time, the Ringstraßenstil was already somewhat outdated, as is shown by the Postsparkassengebäude (Postal Savings Society Building) by Otto Wagner, which was built at the same time.
The Ringstraße was also generously planned with green areas and trees, the most notable parks being the Stadtpark with the Kursalon, Burggarten, Volksgarten, and Rathausplatz, as well as a number of squares such as the Schwarzenbergplatz, Schillerplatz, Maria-Theresien-Platz and Heldenplatz. Dotted along the Ringstraße are various monuments. They include statues to Goethe, Schiller, Empress Maria Theresia, Prince Eugene of Savoy, Archduke Charles of Austria, the founders of the First Austrian Republic, Athena, Andreas von Liebenberg, Count Radetzky, Georg Coch, and Johann Strauß amongst many.