diff --git a/progit/__init__.py b/progit/__init__.py
index dc1270f..f45e2be 100644
--- a/progit/__init__.py
+++ b/progit/__init__.py
@@ -390,6 +390,24 @@ def set_user(return_url):
     return flask.redirect(return_url)
 
 
+@APP.errorhandler(404)
+def not_found(error):
+    """404 Not Found page"""
+    return flask.render_template('not_found.html'), 404
+
+
+@APP.errorhandler(500)
+def fatal_error(error):
+    """500 Fatal Error page"""
+    return flask.render_template('fatal_error.html'), 500
+
+
+@APP.errorhandler(401)
+def unauthorized(error):
+    """401 Unauthorized page"""
+    return flask.render_template('unauthorized.html'), 401
+
+
 @APP.route('/login/', methods=('GET', 'POST'))
 def auth_login():
     """ Method to log into the application using FAS OpenID. """
diff --git a/progit/static/progit.css b/progit/static/progit.css
index d4c6d51..8eafa69 100644
--- a/progit/static/progit.css
+++ b/progit/static/progit.css
@@ -495,3 +495,7 @@ a.button:visited, a.button:hover {
     border: 1px solid rgba(237, 237, 237, 0.4);
     border-radius: 10px 10px 0 0;
 }
+
+[id=error] h2 {
+    color: red;
+}
diff --git a/progit/templates/fatal_error.html b/progit/templates/fatal_error.html
new file mode 100644
index 0000000..3362a8f
--- /dev/null
+++ b/progit/templates/fatal_error.html
@@ -0,0 +1,10 @@
+{% extends "master.html" %}
+
+{% block title %}A fatal error occured :'({% endblock %}
+{%block tag %}error{% endblock %}
+
+
+{% block content %}
+    <h2>Fatal Error (500)</h2>
+    <p>A fatal error has been throwed, we're sorry :(</p>
+{% endblock %}
diff --git a/progit/templates/not_found.html b/progit/templates/not_found.html
new file mode 100644
index 0000000..48cedbe
--- /dev/null
+++ b/progit/templates/not_found.html
@@ -0,0 +1,12 @@
+{% extends "master.html" %}
+
+{% block title %}Page not found :'({% endblock %}
+{%block tag %}error{% endblock %}
+
+
+{% block content %}
+    <h2>Page not found (404)</h2>
+    <p>The requested page cannot be found, we're sorry :(</p>
+    <p>Maybe you enter a bad URL, or the page has moved or has been removed, or...<br/>
+    Use the main navigation menu to get (re)started.</p>
+{% endblock %}
diff --git a/progit/templates/unauthorized.html b/progit/templates/unauthorized.html
new file mode 100644
index 0000000..fc336a9
--- /dev/null
+++ b/progit/templates/unauthorized.html
@@ -0,0 +1,12 @@
+{% extends "master.html" %}
+
+{% block title %}Unauthorized :'({% endblock %}
+{%block tag %}error{% endblock %}
+
+
+{% block content %}
+    <h2>Unauthorized (401)</h2>
+    <p>You are not authorized to display the requested page.</p>
+    <p>If you're not logged in, try to login; if you're already done,
+    that probably means you do not have sufficient access.</p>
+{% endblock %}