10Tower Astra, Germany
With its age and make, this structure in Europe is considered as one of the most dangerous buildings in the world. Constructed in the 13th century, the spire of this church tower is made of oak and has a height of 27.43 meters. Located in Hamburg, Germany, the spire was built to the existent structure in 1450. It became unstable and started to bend due to humidity. Click the next ARROW to see the next image!