Santa Maria in Cosmedin is a historic church located in Rome, Italy. It dates back to the 6th century and is known for its beautiful Romanesque architecture. The church features a stunning façade and a bell tower, making it a notable landmark in the city. Inside, visitors can find the famous Bocca della Verità, or "Mouth of Truth," a large marble mask that is said to bite the hands of liars. The church also houses various religious artifacts and artworks, reflecting its long history and significance in the Christian community.