Riddarholm Church, or "Riddarholmskyrkan" as it is known in Swedish, is a medieval abbey turned burial church located on the island of Riddarholmen, near the Royal Palace in Stockholm, Sweden. It is one of the oldest buildings in Stockholm, with its history dating back to around the late 13th century. The church was initially part of a Franciscan monastery, constructed by the Greyfriars order. The monastery was later dissolved in the 1500s during the Protestant Reformation. Following the Reformation, the church was repurposed as a Protestant church and royal burial ground, becoming the final resting place for the majority of Sweden's monarchs. The exterior of the Riddarholm Church is striking, with its red brick Gothic architecture and a distinctive cast iron spire that was added in the 19th century, replacing the original one destroyed by a lightning strike. The spire is a prominent feature of Stockholm's skyline and can be seen from many parts of the city. Inside, the church is a treasure trove of Swedish history. The interior is a mix of Gothic and Baroque styles, with high vaulted ceilings and large stained glass windows. The floor is adorned with tombstones of various Swedish aristocrats, and royal sarcophagi line the walls. One of the most notable features of the church is the collection of royal burial chapels, each dedicated to a different Swedish monarch. The oldest chapel is that of King Magnus Ladulås, who reigned in the late 13th century. A unique feature here is the use of the Swedish Coat of Arms and the House of Vasa symbols, prominently displayed on the sarcophagi and the walls. The church is no longer used for regular worship and is primarily a site of historical interest. It is managed by the Swedish National Heritage Board and is open to the public for tours. Despite its age, the Riddarholm Church remains in excellent condition and continues to be an important symbol of Swedish history and heritage. It attracts thousands of visitors each year, who come to learn about Sweden's past and to marvel at the architectural beauty of this historic structure.