It's about nine-tenths as big as The Lincoln Memorial Reflecting Pool
In other words, 6.70 feddans is 0.894 times the size of The Lincoln Memorial Reflecting Pool, and the size of The Lincoln Memorial Reflecting Pool is 1.12 times that amount.(Washington, D.C.) (pool surface area)
The Lincoln Memorial Reflecting Pool has a water surface area of 7.50 feddans. The Pool has a sloping bottom and extends to 80 cm (30 in) in depth at its center.
It's about three-fourths as big as Federation Square
In other words, 6.70 feddans is 0.74 times the size of Federation Square, and the size of Federation Square is 1.4 times that amount.(Melbourne, Victoria, Australia)
Federation Square, the large public square in the city center of Melbourne, measures 9 feddans. The main portion of the square is floored with sandstone blocks from Western Australia.
It's about seven-tenths as big as The Philippine Arena
In other words, 6.70 feddans is 0.7 times the size of The Philippine Arena, and the size of The Philippine Arena is 1.4 times that amount.(Ciudad De Victoria, Bocaue - Bulacan, Philippines) (total footprint)
The largest indoor arena in the world, the multi-use Philippine Area has a total footprint of 9.50 feddans, with the dome itself occupying 8.60 feddans. The floor the arena contains over 9,000 tons of steel.
It's about seven-tenths as big as The Principality Stadium
In other words, 6.70 feddans is 0.7 times the size of The Principality Stadium, and the size of The Principality Stadium is 1 times that amount.(a.k.a. Stadiwm Principality, f.k.a. Millennium Stadium, f.k.a. Stadiwm y Mileniwm) (Cardiff, Wales, United Kingdom) (total footprint)
The 70,000-person-plus capacity stadium of Cardiff, Principality Stadium has a total footprint of 10 feddans. Over 40,000 tonnes of concrete and steel during the construction of the stadium.
It's about one-and-three-fourths times as big as The Biltmore Estate
In other words, 6.70 feddans is 1.73 times the size of The Biltmore Estate, and the size of The Biltmore Estate is 0.578 times that amount.(Asheville, North Carolina) (house only)
The main house of Biltmore Estate covers 3.880 feddans and contains 250 rooms. The fifty-six auxiliary buildings of the estate are interconnected through the nearly 71 km of roads on the Biltmore grounds.
It's about three-fifths as big as a Polo field
In other words, 6.70 feddans is 0.561030581 times the size of a Polo field, and the size of a Polo field is 1.78243403 times that amount.(for field polo) (United States Polo Association rules; unboarded side maximum)
An outdoor polo field must measure 274.32 m in length and 146.304 m to in width for a total playing area of up to 11.9423080 feddans. Polo traces its origins to an Iranian (then Persian) war game from the 5th Century, which was played with as many as 100 players per side.
It's about half as big as Rogers Centre
In other words, 6.70 feddans is 0.548 times the size of Rogers Centre, and the size of Rogers Centre is 1.82 times that amount.(f.k.a. Skydome) (Toronto, Ontario, Canada) (entire complex)
Rogers Centre, a major sports stadium in downtown Toronto, measures a total of 12.20 feddans over the entire complex. The video board of Rogers Centre has a total area of 0.0809 feddans.