What is the most realistic piece of art you have ever seen? (not digital)

I make very photo realistic drawings myself. These are my most recent drawings

Beheading of John the Baptist by Michelangelo Caravaggio: For me realism in art is not always conveyed intentionally by an artist. Any portrait by Rembrandt is more "realistic" than the impassionate strokes made by an amateur. This piece here depicts death in all its beauty.

I was lucky enough to see one such 3D street art The above image is 2D. But it looks like 3D when seen from only one angle. The link http://smashinghub.com/stunning-3d-lego-chalk-drawing-to-amaze-you.htm has brief summary on how it is done and making image

The guy is a genius! http://omarortiz.wordpress.com/

Duane Hansen's work was my introduction to hyper realist sculptures. http://www.saatchigallery.com/artists/duane_hanson.htm Some others are working in this same vein: http://www.webdesignerdepot.com/2009/11/mind-blowing-hyperrealistic-sculptures/

Artworks by S Ilayaraja This .. and more  here .. http://webneel.com/webneel/blog/25-beautiful-rural-indian-women-paintings-by-tamilnadu-artist-ilayaraja

Aphrodite by William-Adolphe Bouguereau In his realistic genre paintings he used mythological themes, making modern interpretations of classical subjects, with an emphasis on the female human body. During his life he enjoyed significant popularity in France and the United States, was given numerous official honors, and received top prices for his work. As the quintessential salon painter of his generation, he was reviled by the Impressionist avant-garde.

Found this recently!! An emerging artist named Enam Bosokah from Ghana creates realistic portraits even with a blue ball point pen. I was awestruck by his talent! You can find all his sketches at : https://instagram.com/boski_pens/

Can't believe no one has mentioned Chuck Close yet. He started doing large scale https://en.wikipedia.org/wiki/Photorealism works way back in the 60s and is still one of the most well-renowned contemporary artists working today.I first saw this image when I was in high school and couldn't believe how realistic it was and last year I saw it in the flesh. All I can say is... Wow.The interesting thing about Photorealism is that it often looks even more real in print reproductions (such as in books) or on the internet, but they often fall flat in real life.But Chuck's work looks even more realistic (and like a photo) in person. Sculptural, Ron Muek is worth mentioning also he's been active since the late 80s and was tenuously connected to the https://en.wikipedia.org/wiki/Young_British_Artists