diff --git a/Francesco.Recipes.World/Controller/Category/CategoryController.cs b/Francesco.Recipes.World/Controller/Category/CategoryController.cs
new file mode 100644
index 0000000..0257ab4
--- /dev/null
+++ b/Francesco.Recipes.World/Controller/Category/CategoryController.cs
@@ -0,0 +1,43 @@
+namespace Francesco.Recipes.World.Controller.Category
+{
+    using Francesco.Recipes.World.Models.BackendModels.Category;
+    using Francesco.Recipes.World.Models.BackendModels.Recipe;
+    using Francesco.Recipes.World.Repositories.Category;
+    using Microsoft.AspNetCore.Mvc;
+
+    [Route("Category")]
+
+    public class CategoryController : Controller
+    {
+        private readonly ICategoryRepository _categoryRepository;
+
+        public CategoryController(ICategoryRepository categoryRepository)
+        {
+            _categoryRepository = categoryRepository;
+        }
+
+        // GET: /Category
+        [HttpGet]
+        public async Task<ActionResult<IEnumerable<Category>>> Index()
+        {
+            var categories = await _categoryRepository.GetAllCategoriesAsync();
+            return View(categories);
+        }
+
+        // GET: /Category/{id}
+        [HttpGet("{id:guid}")]
+        public async Task<IActionResult> Details(Guid id)
+        {
+                var category = await _categoryRepository.GetCategoryByIdAsync(id);
+                return View(category);
+        }
+
+        // GET: /Category/{id}/recipes
+        [HttpGet("{id:guid}/recipes")]
+        public async Task<ActionResult<IEnumerable<Recipe>>> GetRecipesByCategory(Guid id)
+        {
+                var recipes = await _categoryRepository.GetRecipesByCategoryAsync(id);
+                return Ok(recipes);
+        }
+    }
+}
diff --git a/Francesco.Recipes.World/Controller/Ingredient/IngredientController.cs b/Francesco.Recipes.World/Controller/Ingredient/IngredientController.cs
new file mode 100644
index 0000000..d59fb2a
--- /dev/null
+++ b/Francesco.Recipes.World/Controller/Ingredient/IngredientController.cs
@@ -0,0 +1,6 @@
+namespace Francesco.Recipes.World.Controller.Ingredient
+{
+    public class IngredientController
+    {
+    }
+}
diff --git a/Francesco.Recipes.World/Controller/Instruction/InstructionController.cs b/Francesco.Recipes.World/Controller/Instruction/InstructionController.cs
new file mode 100644
index 0000000..d86aadf
--- /dev/null
+++ b/Francesco.Recipes.World/Controller/Instruction/InstructionController.cs
@@ -0,0 +1,6 @@
+namespace Francesco.Recipes.World.Controller.Instruction
+{
+    public class InstructionController
+    {
+    }
+}
diff --git a/Francesco.Recipes.World/Controller/MediaFile/MediaFileController.cs b/Francesco.Recipes.World/Controller/MediaFile/MediaFileController.cs
new file mode 100644
index 0000000..6cec16d
--- /dev/null
+++ b/Francesco.Recipes.World/Controller/MediaFile/MediaFileController.cs
@@ -0,0 +1,6 @@
+namespace Francesco.Recipes.World.Controller.MediaFile
+{
+    public class MediaFileController
+    {
+    }
+}
diff --git a/Francesco.Recipes.World/Controller/Recipe/RecipeController.cs b/Francesco.Recipes.World/Controller/Recipe/RecipeController.cs
new file mode 100644
index 0000000..5b21475
--- /dev/null
+++ b/Francesco.Recipes.World/Controller/Recipe/RecipeController.cs
@@ -0,0 +1,156 @@
+namespace Francesco.Recipes.World.Controller.Recipe
+{
+    using Francesco.Recipes.World.Models.BackendModels.Recipe;
+    using Francesco.Recipes.World.Repositories.Category;
+    using Francesco.Recipes.World.Repositories.Ingredient;
+    using Francesco.Recipes.World.Repositories.Recipe;
+    using Francesco.Recipes.World.Repositories.Unit;
+    using Francesco.Recipes.World.Views.Recipe;
+    using Microsoft.AspNetCore.Mvc;
+    using Microsoft.AspNetCore.Mvc.Rendering;
+
+    [Route("categories/{categoryId}/Recipe")]
+    public class RecipeController : Controller
+    {
+        private readonly IRecipeRepository _recipeRepository;
+        private readonly IUnitRepository _unitRepository;
+        private readonly ICategoryRepository _categoryRepository;
+        private readonly IIngredientRepository _ingredientRepository;
+
+        public RecipeController(IRecipeRepository recipeRepository, IUnitRepository unitRepository, ICategoryRepository categoryRepository, IIngredientRepository ingredientRepository)
+        {
+            _recipeRepository = recipeRepository;
+            _unitRepository = unitRepository;
+            _categoryRepository = categoryRepository;
+            _ingredientRepository = ingredientRepository;
+        }
+
+        // GET: /Recipe/AddOrCreateIngredient
+        [HttpGet("{recipeId}/AddOrCreateIngredient")]
+        public async Task<IActionResult> AddOrCreateIngredient()
+        {
+            var units = await _unitRepository.GetAllUnitsAsync();
+            ViewBag.Units = new SelectList(units, "Id", "Name");
+            return View();
+        }
+
+        // POST: /Recipe/AddOrCreateIngredient
+        [HttpPost("{recipeId}/AddOrCreateIngredient")]
+        [ValidateAntiForgeryToken]
+        public async Task<IActionResult> AddOrCreateIngredient(Guid recipeId, string ingredientName, int quantity, Guid unitId)
+        {
+            if (quantity <= 0)
+            {
+                ModelState.AddModelError(nameof(quantity), "Die Menge muss größer als 0 sein.");
+            }
+
+            if (!ModelState.IsValid)
+            {
+                var units = await _unitRepository.GetAllUnitsAsync();
+                ViewBag.Units = new SelectList(units, "Id", "Name");
+                return View();
+            }
+
+            await _recipeRepository.AddOrCreateIngredientToRecipeAsync(recipeId, ingredientName, quantity, unitId);
+            return RedirectToAction("Details", new { id = recipeId });
+        }
+
+        // GET: /categories/{categoryId}/Recipe/Create
+        [HttpGet("Create")]
+        public async Task<IActionResult> Create(Guid categoryId)
+        {
+            var category = await _categoryRepository.GetCategoryByIdAsync(categoryId);
+            if (category == null)
+            {
+                return NotFound($"Kategorie mit ID {categoryId} wurde nicht gefunden.");
+            }
+
+            ViewBag.CategoryName = category.Name;
+            return View();
+        }
+
+        // POST: /categories/{categoryId}/Recipe/Create
+        [HttpPost("Create")]
+        [ValidateAntiForgeryToken]
+        public async Task<IActionResult> Create(Guid categoryId, string name, string description, Difficulty difficulty, int servings, TimeSpan preparationTime, TimeSpan cookingTime)
+        {
+            if (string.IsNullOrWhiteSpace(name))
+            {
+                ModelState.AddModelError(nameof(name), "Name darf nicht leer sein.");
+            }
+
+            if (servings <= 0)
+            {
+                ModelState.AddModelError(nameof(servings), "Anzahl der Portionen muss größer als 0 sein.");
+            }
+
+            if (!ModelState.IsValid)
+            {
+                var category = await _categoryRepository.GetCategoryByIdAsync(categoryId);
+                if (category == null)
+                {
+                    return NotFound($"Kategorie mit ID {categoryId} wurde nicht gefunden.");
+                }
+
+                ViewBag.CategoryName = category.Name;
+                return View();
+            }
+
+            var categoryEntity = await _categoryRepository.GetCategoryByIdAsync(categoryId);
+            if (categoryEntity == null)
+            {
+                return NotFound($"Kategorie mit ID {categoryId} wurde nicht gefunden.");
+            }
+
+            await _recipeRepository.CreateRecipeForCategoryAsync(categoryEntity, name, description, difficulty, servings, preparationTime, cookingTime);
+            return RedirectToAction("Details", "Category", new { id = categoryId });
+        }
+
+        // GET: /categories/{categoryId}/Recipe/{recipeId}/RemoveIngredient/{ingredientId}
+        [HttpGet("{recipeId}/RemoveIngredient/{ingredientId}")]
+        public async Task<IActionResult> RemoveIngredient(Guid categoryId, Guid recipeId, Guid ingredientId)
+        {
+            var recipe = await _recipeRepository.GetRecipeAsync(recipeId);
+            var ingredient = await _ingredientRepository.GetIngredientByIdAsync(ingredientId);
+
+            if (recipe == null || ingredient == null)
+            {
+                return NotFound("Recipe or Ingredient not found.");
+            }
+
+            ViewBag.RecipeId = recipeId;
+            ViewBag.IngredientId = ingredientId;
+            ViewBag.CategoryId = categoryId;
+            ViewBag.IngredientName = ingredient.Name;
+
+            return View();
+        }
+
+        // POST: /categories/{categoryId}/Recipe/{recipeId}/RemoveIngredient/{ingredientId}
+        [HttpPost("{recipeId}/RemoveIngredient/{ingredientId}")]
+        [ValidateAntiForgeryToken]
+        public async Task<IActionResult> RemoveIngredientConfirmed(Guid categoryId, Guid recipeId, Guid ingredientId)
+        {
+            await _recipeRepository.RemoveIngredientFromRecipeAsync(recipeId, ingredientId);
+            TempData["SuccessMessage"] = "Ingredient removed successfully.";
+            return RedirectToAction("Details", new { id = recipeId });
+        }
+
+        // GET: /categories/{categoryId}/Recipe/FilterByDifficulty
+        [HttpGet("FilterByDifficulty")]
+        public async Task<IActionResult> FilterByDifficulty(Difficulty? difficulty)
+        {
+            var viewModel = new FilterByDifficultyViewModel
+            {
+                SelectedDifficulty = difficulty,
+            };
+
+            if (difficulty.HasValue)
+            {
+                viewModel.Recipes = (await _recipeRepository.GetRecipesByDifficultyAsync(difficulty.Value)).ToList();
+            }
+
+            return View(viewModel);
+        }
+    }
+}
diff --git a/Francesco.Recipes.World/Controller/ShoppingList/ShoppingListController.cs b/Francesco.Recipes.World/Controller/ShoppingList/ShoppingListController.cs
new file mode 100644
index 0000000..38fdf4b
--- /dev/null
+++ b/Francesco.Recipes.World/Controller/ShoppingList/ShoppingListController.cs
@@ -0,0 +1,6 @@
+namespace Francesco.Recipes.World.Controller.ShoppingList
+{
+    public class ShoppingListController
+    {
+    }
+}
diff --git a/Francesco.Recipes.World/Controller/Unit/UnitController.cs b/Francesco.Recipes.World/Controller/Unit/UnitController.cs
new file mode 100644
index 0000000..c0efcda
--- /dev/null
+++ b/Francesco.Recipes.World/Controller/Unit/UnitController.cs
@@ -0,0 +1,6 @@
+namespace Francesco.Recipes.World.Controller.Unit
+{
+    public class UnitController
+    {
+    }
+}