I worked in H.C.L (noida) & the buiding is haunted... D 1ce who dont believe me can google "haunted hcl"! I was in d graveyard shift & it was 2:30 @ night. 
I went 2 pee in d urinal and when i turned my head right, i saw a shadow (as if a person is sitting on the pot) but i cudn't c d shoes or feet (the doors r left 1 feet open from d bottom) but it was practically impossible that i can c d complete shadow as if sum1 is sitting but i cant c d shoes. I looked up @ d lights 2 verify if thr was any insect (or sumthing that was helping in creating d shadow) but that wasn't d case 2 b...
I rushed out 2 call my mates but by d tym the toilet was vacant & ol v cud c was d back of a guy, v called him but he nvr turned back or responded. Moreover, d floor keeper was sitting just outside d washroom but he nvr saw that person which
wasn't possible...
No1 is allowed 2 go on d terrace of that building, d girls washroom on d second floor is locked afetr 8 pm (after complaints from girls that some1 touches their shoulder when they sit on d pot)... & a statue of SAI BABA has been placed near d
entrance of d building which has helped but still thr r incidences whr ppl feel that something's wrong... Many of them (including my trainer) admits that d training room is haunted & sometimes d person sitting in d front corner on d right hand side can smell
some sort of fragrance.... That was my xperience... U can believe it or u can say its fake... I dont care...

I wrote it because i've felt it many times (i'll tell the other incidents later) , if u don't believe it, i can't help it... May b u'll also feel it some day... Or
if u're too curious, search 4 d world's most haunted places & visit them & m sure,
u'll feel it 4 sure!!!!! & plz don't 4get, abusing some1 doesn't make u look cool!!!! Thank you