Peterskirche (St. Peter's Church), Heidelberg

A popular photo spot for tourists, Saint Peter's is the oldest surviving church in Heidelberg's Old Town. Originally built in the 12th century in the Romanesque style, it predates the foundation of Heidelberg itself. Renovated in the late 15th century, it gained a Gothic-style tower and chapel; however, after being destroyed during the Nine Years' War, it was rebuilt in baroque style in the early 18th century.

Between 1863 and 1870, the church underwent a neo-Gothic conversion and expansion. Adjacent is an ancient cemetery with graves and monuments over 500 years old, including one belonging to the poet Olympia Fulvia Morata, who died in 1555.

Interestingly, the structure has 90 epitaphs inside and 66 on the outside walls. In 2004, a major renovation of the interior included a new altar, pulpit, baptismal font, Easter candlestick, and a free-standing cross in the choir, made from COR-TEN steel. In July 2006, four new church windows by glass artist Johannes Schreiter were installed. Three windows in the University Chapel feature themes of "encounter", "resurrection", and "persecution", while in the northern side-chapel, used for prayer and meditation, there is a window themed "peace". In March 2008, a modern sculpture of Jesus by Korean artist Lee Choon-Mann was added.

In 2010, three large windows – Holy Spirit" and "Baptism" on the north side and "Heavenly Jerusalem" on the south side, along with two smaller windows themed "Worth" and "Sacrament" – were installed, completing a cycle of nine windows.

The interior regularly hosts exhibitions and concerts, with acoustics that are truly amazing.