The Colosseum in Rome

Unlike earlier Greek theatres that were built into hillsides, the Colosseum is an entirely free-standing structure. It derives its basic exterior and interior architecture from that of two Roman theatres back to back. It is elliptical in plan and is 189 meters (615 ft / 640 Roman feet) long, and 156 meters (510 ft / 528 Roman feet) wide, with a base area of 6 acres (24,000 m²). The height of the outer wall is 48 meters (157 ft / 165 Roman feet). The perimeter originally measured 545 meters (1,788 ft / 1,835 Roman feet). The central arena is an oval 87 m (287 ft) long and 55 m (180 ft) wide, surrounded by a wall 5 m (15 ft) high, above which rose tiers of seating.

The Brooklyn Bridge Manhattan elevation is 276.5' x 140' x 59'
 

Festinger

Made from the parallax distorted view of 16 Cook St. and the working model.

PARALLAX DISTORTION

So here's my dilemma, liberal arts, no math above Alg 2...Trying to solve a trig problem....Trust me, I kinda get it......
I start with a street view of 16 Cook St, Liverpool, and calculate its probably 26' across.

Now to get a height and proportions of the building, I take this, the best photo and start drawing lines on it.

ABCD are the red lines of the buildings with a square rec in magenta.
Actual A and D are known dimensions. B=C. Use the angles of the parallax distortion to solve for B. If I get the factors I can solve.
Are these enough variables?
Uses the same formula to solve for the middle lines?

So today, after several days of gigging, I tried to conquer one basic thing:
How to make light emitters invisible in Blender's cycles render.
This tutorial made it pretty simple:
http://www.youtube.com/watch?v=31tSsLVvFII