The Addy Sea Haunted Inn The Addy Sea Inn in Bethany Beach, DE is a charming Victorian-style bed and breakfast that was built by the Addy family in 1902. The Addy Sea Inn is reportedly one of the most haunted establishments in the entire state of Delaware. Perhaps the paranormal event that it’s most known for is that of a copper bathtub that vibrates. According to guests, the copper bathtub shakes violently and many have reported experiencing the phenomena first-hand. This mysteriously shaking tub is located in Room 1 of the inn. Read more…