Sometimes you ask yourself what can really become a World Heritage Site? I certainly asked myself this question when I first laid my eyes on the Centennial Hall in Wroclaw - a huge grey concrete building that does not exactly place itself on the top-ten list of most beautiful buildings of the world.

But as always, when it comes to World Heritage Sites, there is an interesting story to be told; named Jahrhunderthalle in German it was designed by the famous architect Max Berg in 1913. At the time of construction it was the largest reinforced concrete structure in the world and certainly a pioneering work of modern engineering and architecture. My local guide told me that at the time of construction, some of the workers was even afraid to enter the site because they thought that the whole structure would collapse. But almost 100 years later it still stands strong and has survived to major wars and seen everything from large scale nazi- rallies to large sports events as well as concerts with many famous artists, from Marlene Dietrich and Paul Anka.

The hall is located a few kilometres east of the Wroclaw city centre so it takes a walk or a tram ride to get there. The hall is well worth visiting if you happen to be in the neighbourhood or checking out the beautiful Old Town of Wroclaw