St. John's Church, also known as Stiftskirche in German, is a Protestant church located in the heart of Stuttgart, Germany. The church was originally built in the 12th century, but has been renovated and expanded several times over the centuries.

The current structure of St. John's Church dates back to the 15th century and features a Gothic design. It has a striking 55-meter high bell tower that can be seen from afar. The interior of the church is also impressive, with vaulted ceilings, stained glass windows, and intricate carvings.

St. John's Church is known for its historic significance, as it was the site of several important events throughout history. It was the location where Johannes Brenz, a key figure in the Protestant Reformation, preached in the 16th century. It was also where the German Emperor William II declared war against France in 1914, which marked the beginning of World War I.

Today, St. John's Church is a popular attraction in Stuttgart and is used for both religious services and cultural events. Visitors can attend a church service, explore the historic interior, or attend one of the many concerts and exhibitions that take place throughout the year.