19 Pencil Drawings That Trick Your Mind Into Thinking They're 3-D

<img style="float:right;" src="http://static3.businessinsider.com/image/53ba9cfaeab8eaa8738809d8-700-525/bird-15.jpg" border="0" alt="BIRD Alessandro Diddi 3D drawing art" />

Anamorphic drawings are two-dimensional drawings that, when viewed from a single point of view, seem to leap off the page. Graphic artist Alessandro Diddi has mastered them.

Diddi is an Italian designer who began working on the 3D-looking art in 2013. "The first drawings helped me to learn the basics of the technique and, once I got assimilated, I began to catch a glimpse of the expressive possibilities that this [medium] could offer," Diddi told Business Insider via email.

To create the 3-D illusions with just graphite and paper, Diddi says he has to consider practical aspects (design, photography, and lighting) and psychological aspects (what the observer thinks he or she is seeing). His photos of the art often includes a pencil in them to immediately remind viewers that the items are 2-D.

Diddi's drawings will be shown on July 19 at Santa Monica's "Masters of Illusion" exhibit. Here are some of his mind-blowing works of art.

<h3>"Door and stair"</h3>

<img src="http://static1.businessinsider.com/image/53ba9cf9eab8eaa8738809d5-400-300/door-and-stair.jpg" alt="" />

<h3>"Guitar"</h3>

<img src="http://static2.businessinsider.com/image/53ba9cf969bedd6b1a4b9954-400-300/guitar.jpg" alt="" />

<h3>"Ring"</h3>

<img src="http://static4.businessinsider.com/image/53ba9cf96bb3f7293c4b9958-400-300/ring.jpg" alt="" />

<h3>"Double Illusion"</h3>

<img src="http://static6.businessinsider.com/image/53ba9cf9eab8ea8e6e8809d8-400-300/double-illusion.jpg" alt="" />

<h3>"Stone Bridge"</h3>

<img src="http://static3.businessinsider.com/image/53ba9cf96bb3f7573e4b9954-400-300/stone-bridge.jpg" alt="" />

<h3>"My Left Hand"</h3>

<img src="http://static3.businessinsider.com/image/53ba9cf9ecad04081253d880-400-300/my-left-hand.jpg" alt="" />

<h3>"Jumping Dolphin"</h3>

<img src="http://static2.businessinsider.com/image/53ba9cf9ecad04b00d53d887-400-300/jumping-dolphin.jpg" alt="" />

<h3>"Argh! (The Dangers of Drawing in 3D)"</h3>

<img src="http://static1.businessinsider.com/image/53ba9cf9ecad04081253d883-400-300/argh-the-dangers-of-drawing-in-3d.jpg" alt="" />

<h3>"The Climb"</h3>

<img src="http://static5.businessinsider.com/image/53ba9cfa6da81159552b2729-400-300/the-climb.jpg" alt="" />

<h3>"Best Wishes"</h3>

<img src="http://static2.businessinsider.com/image/53ba9cfa6da811e6522b2729-400-300/best-wishes.jpg" alt="" />

<h3>"Nisan"</h3>

<img src="http://static3.businessinsider.com/image/53ba9cfa6da8116b5d2b2726-400-300/nisan.jpg" alt="" />

<h3>"Get Me Out of Here"</h3>

<img src="http://static1.businessinsider.com/image/53ba9cfaeab8eacf6d8809da-400-300/get-me-out-of-here.jpg" alt="" />

<h3>"Apple"</h3>

<img src="http://static2.businessinsider.com/image/53ba9cfa69beddd0164b9955-400-300/apple.jpg" alt="" />

<h3>"Anamorphic Snake 2.0"</h3>

<img src="http://static3.businessinsider.com/image/53ba9cfa6bb3f787384b9956-400-300/anamorphic-snake-20.jpg" alt="" />

<h3>"Anamorphic Surf"</h3>

<img src="http://static4.businessinsider.com/image/53ba9cfa69bedd691a4b9954-400-300/anamorphic-surf.jpg" alt="" />

<h3>"HR Giger"</h3>

<img src="http://static4.businessinsider.com/image/53ba9cfaecad04081253d886-400-300/hr-giger.jpg" alt="" />

<h3>"Rebellion."</h3>

<img src="http://static3.businessinsider.com/image/53ba9cf96bb3f72c3c4b9957-400-300/rebellion.jpg" alt="" />

<h3>"Equilibrium"</h3>

<img src="http://static2.businessinsider.com/image/53ba9cfa69beddc91e4b9954-400-300/equilibrium.jpg" alt="" />

<h3>First Look: Diddi's most recent, never-before-seen piece, "Bird."</h3>

<img src="http://static1.businessinsider.com/image/53ba9cfaeab8eaa8738809d8-400-300/first-look-diddis-most-recent-never-before-seen-piece-bird.jpg" alt="" />

<h3>Like mind tricks?</h3>

<img src="http://static2.businessinsider.com/image/53baab896bb3f7de734b995e-400-300/like-mind-tricks.jpg" alt="" />

<h2>This Amazing Optical Illusion Has Been Taking The Internet By Storm - Here's Why Your Brain Gets Tricked &raquo;</h2>

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