Austria ; Vienna Old Town

The Stock im Eisen (German: "staff in iron") is the midsection of a tree-trunk from the Middle Ages, a so-called nail-tree (Nagelbaum), into which hundreds of nails have been pounded for good luck over centuries. It is located in Vienna, Austria, in Stock-im-Eisen-Platz, now part of Stephansplatz, at the corner of the Graben and Kärntner Straße and is now behind glass on a corner of the Palais Equitable.

The Palais Equitable is a mansion in Stock-im-Eisen-Platz (now part of Stephansplatz) in the Innere Stadt of Vienna, Austria, that was built in the 19th century for The Equitable Life Assurance Society of the United States and that incorporates the Stock im Eisen on one corner.The building is on the site of five small medieval buildings that were demolished between 1856 and 1886, partly in order to expand Kärntner Straße.

The Vergilius Chapel (German: Virgilkapelle) is an underground crypt next to the Stephansdom in Vienna. It is rectangular in form (approximately 6 meters by 10), with six niches. Today, it lies approximately 12 meters beneath the Stephansplatz.

The Episcopal Palace (German: Erzbischöfliches Palais) in Vienna, Austria is the seat of the Archbishop of Vienna. It is located in the centre of the city next to St. Stephen's Cathedral.

Palais Gomperz is a Ringstraßenpalais in Vienna, Austria. It was built for the aristocratic Gomperz family.

The Secession Building (German: Secessionsgebäude) is an exhibition hall in Vienna, Austria. It was completed in 1898 by Joseph Maria Olbrich as an architectural manifesto for the Vienna Secession, a group of rebel artists that seceded from the long-established fine art institution.

Pi is the name of a multimedia installation in the vicinity of the Viennese Karlsplatz. Pi is located in the Opernpassage between the entrance to the subway and the subway stop in Secession near the Naschmarkt. The individual behind the project was the Canadian artist Ken Lum from Vancouver.Pi, under construction from January 2005 to November 2006 and opened in December 2006, consists of statistical information and a representation of π to 478 decimal places.

Café Museum is a traditional Viennese café located in the Innere Stadt first district in Vienna. The café opened in 1899. The original interior was designed by renowned architect Adolf Loos. The café became a meeting place for Viennese artists.

The Alban Berg Monument, in Vienna, Austria, is a memorial to the composer Alban Berg (1885–1935), unveiled in 2016. It is situated on Herbert-von-Karajan-Platz next to Vienna State Opera.

The Maltese Church (German: Malteserkirche) (full name - Church of Saint John the Baptist) is a Roman Catholic Gothic church of the Knights Hospitaller in Vienna, on Kärntner Straße in the 1. Wiener Gemeindebezirk Innere Stadt.The first church on this site is mentioned in 1217, as a "House of the Prueder of the Order of Saint John", a commandry to care and support crusaders.