Concord's Colonial Inn is known for being a historically haunted hotel due to its age and location near Revolutionary War sites. Guests and investigators report various paranormal phenomena, including flickering lights, disembodied whispers, and apparitions of former residents like nurses, soldiers, and even Henry David Thoreau. Specific rooms, such as Room 24 (an operating room) and the former morgue (now a restaurant called the Liberty Room), are focal points for these reported hauntings. The inn was built before the Revolutionary War and is located near the North Bridge, where the famous "shot heard 'round the world" took place. Some rooms were used for operating on or housing wounded soldiers, and one was a morgue, leading to a significant number of deaths within the inn's walls. Guests have experienced flickering lights, TVs turning on by themselves, whispers from closets, and the feeling of being tucked into bed. Several apparitions have been reported, including a nurse named Rosemary, wounded soldiers, and a tall, slim man in a top hat, possibly representing Thoreau. A grayish figure has also been seen at the foot of a bed. Some accounts include items falling from shelves, personal belongings going missing and reappearing, and objects moving on their own. Guests have felt a tugging sensation, heard humming, and noticed temperature changes, particularly the feeling of warmth or cold in closets. Room 24: This room was used as an operating room for wounded soldiers during the Revolutionary War and is a site for reports of an eerie presence and strange feelings. Liberty Room: This former morgue is now a restaurant where items are known to disappear and reappear. Hallways: Visitors have reported seeing various figures, including the older woman and the man with the top hat, in the hallways.