What are examples of magical realism in Extremely Loud & Incredibly Close?

This is the most amazing book I've read in a long time. 
First, you must know and understand the definition of "magical realism".  The author
incorporates in his writing a mixture of fantasy within the realm of the real world. 
That the narrator of this book, Oskar Schell is only nine, is suitable and believable
for the magical realism which is present throughout.

The
book is about Oskar's coming to terms with the fact that his father, Thomas Schell, has
died in the 911 attack on the Twin Towers in New York City.  Oskar is the only one who
heard his father's multiple calls from the tower before its collapse and his death. 
Oskar hides the answering machine from his mother and grandmother, and spends the book
looking for the lock a key which belonged to his father accompanies.  The only clue is
the word "Black," so therefore, he searches the city for all the 200+ people named
"Black."  All of whom, are uniqe and wonderful in their own way, but also suffering from
the effects of 911.

So, to answer your question, a few
examples of magical realism are Oskar's imagination as he attempts to deal with the
suddenly dangerous world in which he finds himself where buildings can suddenly collapse
and loved ones can disappear.  He pretends he can fly, he envisions his father and
imagines speaking to him, his grandparents have an apartment divided into zones of
"something" and "nothing" where they can submerge themselves into
non-existence.

The question as you read, is:  What seems to
be real and what is fantasy/invention?  There are many more examples than what I have
given you here, and it will be easy for you to find them within the confines of Oskar's
intellectual and inventive nine-year-old mind.

Look closely
at Oskar's epic adventures in search of the Blacks and the answer for the key/lock. 
They are fun, heartbreaking, and fantastic.

Above all,
enjoy reading this amazing book.