The Gedächtniskirche der Protestation ('The Memorial Church of the Protestation') was built between 1893 and 1904. It was constructed in memory of the protest that took place at the Diet of Speyer by the Protestant states of the Holy Roman Empire in 1529. The tower is the tallest bell tower in the palatinate with 100 m. Its construction was supposed to be a reminder of the protest action that the imperial evangelical states brought to bear in 1529 at the Reichstag in Speyer. The Luther memorial in the vestibule and the adjacent statues of local Protestant rulers serve as reminders of this event.
During the cultural struggles at the end of the 19th century, relationships between Catholics and Protestants were tense. That had its impact on the construction of the Memorial Church which was, under no circumstances, to be any less assertive than the Cathedral. In any event, the construction was controversial, even for evangelical Christians.
The Protestants collected donations and even gained the support of Kaiser Wilhelm II and his wife, who donated the glass window in the apse. Following the plans of Julius Flügge und Carl Nordmann, the church was built very lavishly out of white-gray Vosges sandstone.
In 1979, the organ was replaced. The current organ comes from the Detlef Kleuker workshop and is, with its 95 registers, the largest organ in southwest Germany and the second largest mechanical organ in the world.
Organ concerts and matinees take place regularly in the Memorial Church.
References:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.