A building feature is a structural element of a building that adds to its aesthetic appeal. A GARGOYLE is an architectural element that is typically found on the exterior of a building and is often carved in the shape of a mythical creature. A SPIRE is a tall, slender structure that is usually found on the top of a building and is often used to add height and grandeur. A rotunda is a circular structure that is often found at the entrance of a building and is used to create a sense of grandeur. An APSE is a semi-circular structure that is often found at the end of a building and is used to create a sense of symmetry. A CANTILEVER is a structural element that projects out from a building and is used to create a sense of balance.