Katholisch Apostolische Kapelle (Catholic-Apostolic Chapel), Basel

The Catholic-Apostolic Chapel in Basel is a historically significant building located in the Am Ring district. Nestled within a square framed by Saint Paul's Church, Saint Mary's Church, the Church of San Pio X, and the Church of the Sacred Heart, this chapel has stood as a landmark since its construction in 1863. It was designed by Basel builder Theodor Ecklin, originally set in a largely undeveloped area, and is now owned by a foundation.

The chapel's prayer room, the largest part of the building, is particularly striking and forms the focal point of the structure. Architecturally, the chapel showcases a blend of styles typical of mid-19th-century trends, particularly the round arch style, which was influenced by the Munich and Karlsruhe schools of architecture. The building consists of a nave with a gently sloping gable roof, facing Feierabend Strasse, and a spacious polygonal choir to the southeast. Its external features, such as flat wall pillars, arched friezes, and regularly arranged arched windows, reflect a refined interpretation of medieval and classicist motifs.

Inside, the chapel boasts a well-proportioned and unified space. The visible roof construction defines the nave, while the choir is distinguished by detailed paneling, ornamentation, stained glass, and carefully preserved neo-Gothic furnishings. The high level of preservation of the interior speaks to the community's dedication to maintaining the chapel’s original character and details.

In April 2008, the Basel city government added the chapel to the cantonal monument protection register for its architectural, art-historical, and cultural value. The prayer hall was recognized as one of Basel’s significant architectural monuments.

The Catholic-Apostolic Chapel is not just a place of worship but a testament to Basel's architectural and cultural heritage, embodying a rare unity of style and preservation.