diff --git a/90 Tower/csharp/Tower.sln b/90 Tower/csharp/Tower.sln
new file mode 100644
index 00000000..2c6e524d
--- /dev/null
+++ b/90 Tower/csharp/Tower.sln	
@@ -0,0 +1,34 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26124.0
+MinimumVisualStudioVersion = 15.0.26124.0
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tower", "tower\Tower.csproj", "{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Debug|x64.Build.0 = Debug|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Debug|x86.Build.0 = Debug|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Release|Any CPU.Build.0 = Release|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Release|x64.ActiveCfg = Release|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Release|x64.Build.0 = Release|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Release|x86.ActiveCfg = Release|Any CPU
+		{2E14FCD5-A52C-4292-A7F4-0C7E5780C962}.Release|x86.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal
diff --git a/90 Tower/csharp/Tower/Program.cs b/90 Tower/csharp/Tower/Program.cs
new file mode 100644
index 00000000..4793b817
--- /dev/null
+++ b/90 Tower/csharp/Tower/Program.cs	
@@ -0,0 +1,12 @@
+using System;
+
+namespace Tower
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello World!");
+        }
+    }
+}
diff --git a/90 Tower/csharp/Tower/Tower.csproj b/90 Tower/csharp/Tower/Tower.csproj
new file mode 100644
index 00000000..20827042
--- /dev/null
+++ b/90 Tower/csharp/Tower/Tower.csproj	
@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>