The large "Protestant St. Peter's" measures 114 m long and 73 m wide. The dome is intricately decorated with mosaics. Other notable artworks include Sauer's Organ, the Neo-Baroque pulpit and stained glass windows designed by Anton von Werner. The main altar dates from 1850. An excellent view of the dome and entire interior can be had from the dome's gallery. The 270-step climb to the top is more pleasant than at most cathedrals, with a wide stairwell, plenty of places to pause, and interesting historic photos and models to look at along the way | Source = Berliner Dom (Berlin Cathedral)