Rundetårn (round tower) is an iconic building from the time of Christian IV in the center of Copenhagen. The 41 meter round tower consists of a 209 meter long spiral ramp designed for the king to ride his horse up to the final staircase. From the top of the tower is a great view over the city.
In the center of Rundetårn it is now possible to stand on a glass floor floating 25 meters over the ground. The round window is about 1,3 meters in diameter looking down in to the heart of the tower. Due to the nature of the old building and the safety requirements for the glass, the project was quite complex. The window consists of four layers of glass and one acrylic sheet, which can easily be changed when it gets too scratched.
The Danish television program TV2 Lorry has made this video about the new glas floor in Rundetårn (in Danish).
Glarmestre Snoer og Sønner A/S (glaziers) and Krabbenhøft & Ingolfsson as consulting engineers.
The project was completed and opened for the public in March 2014.
Top image courtesy of Glarmestre Snoer og Sønner A/S.