World's Longest Residential Building - Karl Marx Hof

We've looked at many of the world's largest things in the past, so for something different, let's look at the longest. Karl-Marx-Hof in Vienna is the world's longest residential building, stretching more than a kilometre through the 19th district better known for large houses and diplomatic residences. The building consists of almost 1,400 apartments, meant to house up to 5,000 people. The design included amenities such as a swimming pool, library, laundries, shops, a school and medical facilities. Only the eastern side of the building stretches the full 1,100 metres, but in many sections there are blocks on the western side of the development which create internal courtyards and parks for the residents. The building consists of almost 1,400 apartments, meant to house up to 5,000 people. The design included amenities such as a swimming pool, library, laundries, shops, a school and medical facilities. Only the eastern side of the building stretches the full 1,100 metres, but in many sections there are blocks on the western side of the development which create internal courtyards and parks for the residents.

The apartments were some of the first in the city to each include a toilet, running water and balconies – luxuries that workers of the time had never experienced before. Today, however, they are less desirable due to their small size and the fact that many don't have showers or other modern facilities. Several tunnels had to be incorporated into the design to allow the continuation of city streets and traffic flow. The building suffered heavy damage during the Austrian Civil War of 1934 when military and police forces took severe action, bombarding the building to force out unarmed families and Party workers who were barricaded inside.  This damage wasn't repaired until some years after World War 2.

This damage wasn't repaired until some years after World War 2. Map