As such, low-flying aircraft could damage the wooden structure just by flying over it. To protect the historical site, it was designated a "no-fly zone" in 1970.

Although fewer companies fly the skyward tow ads, those who do claim business is booming and data backs them up.

Although fewer companies fly the skyward tow ads, those who do claim business is booming and data backs them up.

Expanding from 35 to 75 entries, this latest iteration kicked off Monday (June 16) with the reveal of the artists ranked ...