Sign number 10 from the "Vienna - the city introduces itself" series of signs, an initiative established in 1956 as part of the Vienna Festival, which shows significant places in the city. The serial number is displayed at the bottom of the sign.
Above the sign are 4 flags of Austria, which is a hallmark of the project, and the possibility of recognizing it from a distance Click for a larger image
Note that this sign is slightly different from other signs from the same series - the text appears in it in two languages (German and English), the phrase "Vienna - A city introduces itself" does not appear at the bottom, but the initiating factor - the Vienna Tourist Board.
The sign is in the Imperial Crypt which is under the Capuchin Church. The cornerstone of the building was laid in 1618 by Empress Anna of Tyrol who wanted a burial place for her and her husband Matthias, emperor of the Holy Roman Empire. The building was completed in 1632 and houses the Habsburg dynasty.
The building was photographed that day Click for a larger image
The church itself is on the site with a sign dedicated to it Click for sign's details