riddle - Iconic Places and 820.5: Grandpa's silly math

This riddle could be considered short and sweet and may need some lateral thinking.

Grandpa says to me with a mischievous smile:

"Hope you know your famous iconic places or landmarks.

Show that the following equation is correct.

Taiwan Landmark NY Landmark US Iconic Highway = 820.5"

Bit of a stretch, if you ask me.

Answer

Taiwan Landmark:

(Taipei) 101

NY Landmark:

Times Square

US Iconic Highway:

Route (root) 66

Equation:

101 * sqr(66)

Which equals

820.5, approximately.