diff --git a/src/AbstractEvent.php b/src/AbstractEvent.php
index 17df339..89b8615 100644
--- a/src/AbstractEvent.php
+++ b/src/AbstractEvent.php
@@ -47,6 +47,9 @@ abstract class AbstractEvent
     /** @var Collection<EventParticipation> Participations registered to this event */
     protected $participations;
 
+    /** @var Collection<Attachment> Attachments to this event */
+    protected $attachments;
+
     public function __construct(AbstractCalendar $calendar, User $owner, $name, Datetime $start, Datetime $end)
     {
         $this->name     = $name;
@@ -54,6 +57,7 @@ public function __construct(AbstractCalendar $calendar, User $owner, $name, Date
         $this->calendar = $calendar;
 
         $this->participations = new ArrayCollection;
+        $this->attachments = new ArrayCollection;
 
         if ($start > $end) {
             throw new InvalidArgumentException('An event cannot start after it was ended');
@@ -221,5 +225,23 @@ public function removeParticipation(EventParticipation $participation)
 
         return $this;
     }
-}
 
+    /** @return Collection<Attachment> */
+    public function getAttachments()
+    {
+        return $this->attachments;
+    }
+
+    /** @return $this */
+    public function addAttachment(Attachment $attachment)
+    {
+        $this->attachments->add($attachment);
+
+        return $this;
+    }
+
+    public function hasAttachments()
+    {
+        return $this->attachments->count() > 0;
+    }
+}
diff --git a/src/Attachment.php b/src/Attachment.php
new file mode 100644
index 0000000..9f22aac
--- /dev/null
+++ b/src/Attachment.php
@@ -0,0 +1,29 @@
+<?php
+/**
+ * This file is part of the CalendArt package
+ *
+ * For the full copyright and license information, please view the LICENSE file
+ * that was distributed with this source code.
+ *
+ * @copyright Wisembly
+ * @license   http://www.opensource.org/licenses/MIT-License MIT License
+ */
+
+namespace CalendArt;
+
+/**
+ * Represents an Attachment in a Event
+ *
+ * Like all generic objects, this object should be extended by the adapter
+ */
+interface Attachment
+{
+    /** @return mixed */
+    public function getId();
+
+    /** @return string */
+    public function getName();
+
+    /** @return string */
+    public function getContents();
+}
diff --git a/src/UriAttachment.php b/src/UriAttachment.php
new file mode 100644
index 0000000..61fac89
--- /dev/null
+++ b/src/UriAttachment.php
@@ -0,0 +1,23 @@
+<?php
+/**
+ * This file is part of the CalendArt package
+ *
+ * For the full copyright and license information, please view the LICENSE file
+ * that was distributed with this source code.
+ *
+ * @copyright Wisembly
+ * @license   http://www.opensource.org/licenses/MIT-License MIT License
+ */
+
+namespace CalendArt;
+
+/**
+ * Represents an Attachment in a Event
+ *
+ * Like all generic objects, this object should be extended by the adapter
+ */
+interface UriAttachment extends Attachment
+{
+    /** @return string */
+    public function getUri();
+}