We have developed the interactive app called Time Explorer for Historic Royal Palaces, this app gives the mission when the people visit Hampton Court Palace or the Tower of London. Adventure into the past and help characters from history to solve a problem. Explore the palace, do challenges, look for clues and find the answers. Win a badge for every mission you complete. HRP also arranged the school tours for students to experience this app, before the staff giving them the introduction briefing, this animation presents as the opening, the time tunnel brings them back to the past and gets ready to the adventure.