The Keating family of Wilton, for the second year in a row, has an entry in the Maritime Aquarium\u2019s Festival of Lighthouses, on display daily through Jan. 21. Visitors to the aquarium may vote for their favorite, and the winner will be awarded $1,500. As many as 22 lighthouses are on display, and according to the aquarium. The Keatings\u2019 entry is called \u201cMystery Point Lighthouse.\u201d The tall black-and-white lighthouse is surrounded by mermaids and fairies, and there\u2019s a boat rocking in a deep blue sea. The setting is nighttime with a crescent moon and twinkling colored stars. Last year, the Keatings entered \u201cMermaid Hollow,\u201d a traditional white lighthouse with a bright beacon atop a rocky shore. \u201cThey\u2019re beautiful. They\u2019re funny. They\u2019re clever. They\u2019re intricate. They\u2019re exquisite,\u201d said Chris Loynd, the aquarium\u2019s marketing director, of this year\u2019s lighthouses. \u201cEvery year, we\u2019re blown away by the time and effort people put into designing and building these lighthouses, which add tremendous value to our visitors\u2019 experience through the holidays.\u201d Rules are kept to a minimum to allow for maximum creativity. Lighthouses must be three to six feet tall and have a working light, and may not include animal remains (such as shells). Beyond that, it\u2019s up to the creators\u2019 imaginations. Two lighthouses are modeled after real lights \u2014 the famous West Quoddy Head Light in Lubec, Maine, and the historic light in Sandy Hook, N.J. A distinctly modern lighthouse was entered by Nick Parker of Ridgefield, also a veteran of the festival. His entry this year is called \u201cLifehouse,\u201d a traditionally shaped red-and-white lighthouse that has three windows showing cartoon images of his two daughters plus interactive computer animation of a cartoon dog named Charlie. Visitors can ask the dog to sit, bark and answer questions. Other entries include a lighthouse covered in crocheted yarn and a lighthouse that humorously represents the 12 days of Christmas. There are lighthouses made of intricately cut pieces of stone, of stained glass, of punched tin, and of tiny cups of diner coffee creamer. Winners will be announced at an evening reception on Jan. 25. Information: 203-852-0700 or maritimeaquarium.org.