Eligible heritage in this photo contest are all four types of heritage: (1) Immovable heritage are archaeological sites, monuments, cultural-historical landscapes, war relics and city and village landscapes. (2) Movable heritage are the collections of art objects, utensils, decorative objects, archival documents, visual material, historic tools and vehicles, etc., which are stored in museums, archives and heritage libraries. (3) Immaterial heritage are the non-tangible habits or customs of the past or still are practiced today. For example, parties, stories, songs, traditions, social customs, rituals, crafts, ... (4) Maritime heritage is the nautical heritage that can sail or float. This concerns both seagoing vessels and vessels for inland waters with various propulsion types, or without their own propulsion, which were used for pleasure or for professional purposes.