A condemned building is a structure that has been deemed unsafe for occupation due to various reasons such as structural defects, environmental hazards or safety concerns. Synonyms for condemned buildings include dilapidated buildings, abandoned buildings, ruins, derelict buildings, decaying structures, rundown structures, and neglected buildings. These terms all imply neglect and abandonment, with the structures being left to fall apart due to disrepair or insufficient maintenance. Condemned buildings can pose significant dangers and liabilities to the public and owners, which means there are often laws in place that require them to be renovated or brought down. Despite the negative connotations associated with these buildings, they can also hold historical or cultural significance and can sometimes be revitalized for new uses.