Daisy, Countess of Warwick, laid out a small private garden at Easton Lodge near Great Dunmow in Essex,probably around 1865. It contained a floral sundial surrounded by hour lines made of planted box, and an inscription, also in box.
A giant sundial 70 feet in diameter with a bright yellow painted steel gnomon 78 feet long. The dial has a cement base and was designed to be used as the stage for a surrounding amphitheater.
This russian T-34 tank is parked at the corner of Mandela way and Pages Walk in London.
On this image on GE it's canon painted as a cigarette, the rest as smoke. It has also been painted in pink, girly style. You can see it on the link below.
The portrait of Ataturk in Erzincan in Turkey
It is the biggest portrait of world. It had maden by Turkish soldiers on an area of 7.500 m², in a short time as a month, by 3000 men (17 tecnical personel)