Trevi's big museum is the Museo S. Francesco, next to the Gothic church S. Francesco, which is not used for worship any more. It has a few Roman stones, but mostly many Umbrian paintings from the late Middle Ages to the 17th century: the best painting once was part of an altar, and it is by Lo Spagna. There is a very interesting group of "ex‑votos" (paintings to thank God for saving a person from a sickness or an accident) painted by ordinary people, not famous artists, of the 16th‑ century to the 18th‑century.
The Museo della Civiltà dell' Olivo demonstrates the local olive culture: how they are planted, how they grow, and how they are made into oil. The Flash Art Museum is dedicated to contemporary art and is the seat of an international art magazine.
The oldest big book on the history of Trevi is "Historia universale dello Stato temporale ed ecclesiastico di Trevi", 1233 pages, by Durastante Natalucci, Trevi, 1745. It was translated into a more modern and readable Italian by Carlo Zenobi, a local historian, between 1987 and 1994.
An important book for the plain below Trevi is "Cannaiola, Memorie storiche raccolte negli anni 1873‑74" by Father (now the Blessed) Pietro Bonilli.
Pro Trevi, the town's volunteer tourism office, has helped people write and print new books about the history, plants and animals of Trevi and the country nearby.
Nicomachus
Nicomachos or Nicomachus is a Greek name. It can mean:
Logo
A logo is a picture or drawing that is used by a person, group, or company to mark who they are. A wordmark, or 'logotype', is a logo made entirely of a word or words. It is usually the name of a product or organisation.
A company or group can use a 'logo' on the things that they make, like on the things they sell, on letters, and in advertisements. When a person sees the logo picture, that person knows that the thing they see the logo on came from that company.
Logos can have letters and words in them. Many logos have the name of the company or group in them.
Most logos are very simple drawings with only a small number of colors. Some logos are only in black and white.
In many countries, companies and groups should tell their country's government about the logo they are using. If they do this, the government can help stop a different company or group from using the same logo, so that every one can be sure that the logo is only used by the people who used it first. This is sometimes called a 'trade mark'.
Logos are not used only by companies. Many schools have logos. Some cities have logos. Clubs can have logos. Even people can have their own logos if they want. The heraldic badge is probably the oldest form of logo in the world.
Picture
A picture, also called an image, is a group of coloured points on a flat surface that looks the same as something else. For example, a picture can look the same as an object or a person. Pictures can also be drawings, paintings or photographs. People who make such pictures are called artists, photographers or painters. Pictures are very helpful. Sometimes people say pictures are worth a thousand words. Pictures and diagrams can be used to explain how to do things, and thus a picture is a kind of tool. A moment captured in an image.
An image is something that can be seen, but it is not physically there. It can be a photograph, a painting, or a picture on a television or computer screen. A lens can make an image of an object appear somewhere else. Cameras use this to make the image that becomes a photograph.
Most pictures today are 'photographs'. Photographs are made with cameras. A camera makes a picture that looks very real.
When there were no cameras, people made pictures by using paint, brushes, pencils, crayons, pens, and other things that people can write or draw with. Pictures made with paint and brush are called 'paintings'. Before cameras, some artists were able to make very real looking pictures with just paint. Sometimes pictures made with pencil or pen are called 'sketches', if they are made quickly and only look a little bit like the real thing.
Usually pictures are put on paper. Pictures made with paint are usually put on a strong, rough fabric called 'canvas'. Sometimes pictures can be put on walls or other things, even glass.
Some places, such as churches have pictures on windows made out of colored pieces of glass. These are called "stained glass".
If people take a lot of pictures, and show them one at a time, very fast, they can make a picture that looks like it is moving. This is called a "moving picture", or a movie. A television shows people a moving picture by using light.
A slide show is a series of pictures arranged to tell a story, for example to illustrate a narrative.
A projector shines light from a light bulb through a kind of transparent picture. When light shines through this kind of picture onto a screen or another flat place, the picture can be seen on that flat place. This is often used to show movies and slide shows to an audience.
Some people make pictures that do not look flat, by taking two regular flat pictures at the same time. People have to move their eyes in a special way or use a stereoscope so they can see both pictures together. When they look at the pictures using their binocular vision correctly, the picture does not look flat. This is called '3D' or 'three dimensional'.
Cutaway pictures show what is inside of something, that cannot actually be seen.
Building
Building may be a noun or a verb. Building is one of the most ancient human skills. It is part of how we have survived and it is the clearest symbol of every civilization. Although some other animals build simple structures, e.g. birds, ants and bees, humans have learned to build in a great many different ways to suit different needs and local conditions. We build mostly for shelter. Buildings can shelter people, or animals, or machinery, or anything. The simplest building is just a roof to keep the space beneath dry, or shady. Adding walls gives more shelter, from the wind or rain. It also gives security.
By putting a window in a wall with or without glass, we let light inside the building. We leave a hole somewhere big enough to go in and out, with a door which can be opened and closed. Often the door will have a lock so the building can be left secure.
If a building is to last for a long time, it must have a solid foundation. This foundation is like the root of a tree, which is sunk a bit deep into the ground and supports the walls. If the ground is soft, the foundation must be very deep and strong so that the building can have a strong contact with the ground.
If a building is high enough, it can have more than one floor. People can climb from one floor to the next by a staircase, or perhaps by a lift or elevator. This is known as going upstairs, or downstairs. Buildings can also have a floor under the ground. This is usually called a cellar or basement.
Buildings can be beautiful or ugly, exciting or boring. Architects are people trained to design buildings. Their work is called architecture and it can be an art form. Look at the building where you are reading this. Look at the shapes and shadows. Is there enough light? Do some rooms make you feel like staying in them while others make you want to hurry away? Do they have interesting features? Think about how you could have made the building better. Almost anybody can become an architect if they want to. But only a good architect or a good builder can design or build a beautiful building.
Shelters are places to live (residential buildings). We also build places to work and to make things, places to store things, places to sell things, places where sick people can go to be treated, places to put people who break our laws. We build to do many things.