A "hidden garden" refers to a secluded outdoor space that is often concealed from public view. These gardens can be found in urban areas, private homes, or even within larger parks. They typically feature a variety of plants, flowers, and sometimes water features, creating a tranquil environment for relaxation and reflection. Many hidden gardens are designed to provide a sense of privacy and escape from the hustle and bustle of everyday life. They may include elements like pathways, benches, and decorative structures, allowing visitors to enjoy nature in a peaceful setting. Some famous examples include the Secret Garden from the novel by Frances Hodgson Burnett and various urban gardens in cities like New York and London.