during the 20th century several archeological expeditions explored portions of the ruins, but they remained generally covered in brush. in 2007 the burg mannerberg foundation was established to restore and maintain the ruins. the project was initially projected to cost about 770,000 chf with the swiss federal government and the canton of bern providing the majority of the funds, while the foundation provided about 194,000 chf. the project was completed in 2011 at a total cost of about 880,000 chf. today several walls and parts of a round tower are free of the earth and stand in a clearing. the ruins of the castle are topped with a sight seeing platform.