Hey :) This is my first tab, so please email me if i did something wrong 
(m.debski@me.com). I know there's another way to play this (Dm, F, Am, G), but 
this is a nice alternative :)

Capo: 5

Basically you play Am, C, Em, D


      Am         C
The cycle repeated
       Em                   D
As explosions broke in the sky
        Am      C
All that u needed
        Em                 D
Was the one thing I couldn’t find
             Am              
And you were there at the turn
C                 Em      D
Waiting to let me know


                 Am       C
We're Building it Up
             Em      D
To break it back down
                 Am      C
We're building it up
              Em
To burn it down

Can't wait
     D
To burn it to the ground 
[ Tab from: http://www.guitaretab.com/l/linkin-park/312738.html ]
Am C Em D

The colors conflicted
As the flame 
Climbed into the clouds
I wanted to fix this
But couldn’t stop
From tearing it down
And you were there at the turn
Caught in the burning glow
And I was there at the turn
Waiting to let you know

We're Building it Up
To break it back down
We're building it up
To burn it down
Can't wait
To burn it to the ground 

You told me yes
You held me high
And I believed
When you told that lie
I played soldier
You played king
And struck me down
When I kissed that ring
You lost that right
To hold that crown
I built you up
But you let me down
So when you fall
But you let me down
So when you fall
I’ll take my turn
And fan the flames
As your blaze burn
And you were there at the turn
Waiting to let mi know

We're Building it Up
To break it back down
We're building it up
To burn it down
Can't wait
To burn it to the ground 

When you fall
I’ll take my turn
And fan the flames
As your blazes burn
We can't wait
To burn it to the ground
/2x   

The cycle repeated,
As explosions broke in the sky,
All that I needed,
Was the one thing I couldn't find,
And you were there at the turn,
Waiting to let me know,

Chorus:
We're building it up,
To break it back down,
We're building it up,
To burn it down,
We can't wait,
To burn it to the ground.

The colors conflicted,
As the flames climbed into the clouds.
I wanted to fix this,
But couldn't stop from tearing it down.

And you were there at the turn,
Caught in the burning glow.
And I was there at the turn,
Waiting to let you go.
[ Lyrics from: http://www.lyricsfreak.com/l/linkin+park/burn+it+down_21011751.html ]
We're building it up,
To break it back down,
We're building it up,
To burn it down,
We can't wait,
To burn it to the ground.

You told me yes,
You held me high,
And I believed,
When you told that lie.

I played solider,
You played king,
Struck me down,
When I kissed that ring.

You lost that right,
To hold that crown,
I built you up,
But you let me down.

So when you fall,
I'll take my turn,
And fan the flames,
As your blazes burn.

And you were there at the turn,
Waiting to let me know.

We're building it up,
To break it back down,
We're building it up,
To burn it down,

[We can't wait,
To burn it to the ground.
So when you fall,
I'll take my turn,
And fan the flames,
As your blazes burn. ] x2

We can't wait,
To burn it to the ground...