Pikachu is one of the most popular Pokemon characters. It is the Pokemon character that is regularly part of the Macy's Thanksgiving Day Parade as a balloon. Pikachu can be great costume for Halloween and fancy dress parties. There are a variety of ways to make a Pikachu costume if you do not want to buy one ready-made or cannot find one that suits your needs.
An optical illusion (also called a visual illusion) is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a percept that does not tally with a physical measurement of the stimulus source. There are three main types: literal optical illusions that create images that are different from the objects that make them, physiological ones that are the effects on the eyes and brain of excessive stimulation of a specific type (brightness, tilt, color, movement), and cognitive illusions where the eye and brain make unconscious inferences.
Christmas tree in front of White House in Washington DC on Dec 8th.
Its Christmas time, the festival is coming very close. The streets in different countries are been glowing with illuminating bright lights on the eve of Christmas holidays. You can see verity of Christmas trees and colorful lights which are lit up around the shopping streets. 
