How long is 90 feet?
It's about as long as Baseball base distances
The length of Baseball base distances is about 90 feet.
(MLB Official Baseball Rules specification)
It's about one-and-one-third times as long as a Cricket Pitch
The length of a Cricket Pitch is about 66 feet.
(per Marylebone Cricket Council / International Cricket Council Law #6)
It's about one-and-two-fifths times as long as a Bowling Lane
The length of a Bowling Lane is about 62.8480 feet.
(USBC specifications; tenpin; including pin deck)
It's about two-thirds as long as Ha'Penny Bridge

The length of Ha'Penny Bridge is about 141 feet.
(a.k.a. Droichead na Leathphingine, a.k.a. Liffey Bridge, a.k.a. Droichead na Life, f.k.a. Wellington Bridge) (Quay of Bachelors Walk, Temple Bar Neighborhood, Dublin, Ireland)
It's about three-fifths as tall as The Chicago Water Tower

The height of The Chicago Water Tower is about 154 feet.
(Chicago, Illinois)
It's about three-fifths as tall as The Arc de Triomphe

The height of The Arc de Triomphe is about 160 feet.
(Paris, France)
It's about one-and-four-fifths times as tall as The Hollywood Sign

The height of The Hollywood Sign is about 49 feet.
(a.k.a. Hollywoodland Sign) (Mount Lee, Hollywood Hills, Santa Monica Mountains, California)
It's about one-and-nine-tenths times as long as a Semitrailer
The length of a Semitrailer is about 48 feet.
(a.k.a. semi-trailer truck, a.k.a. semi, a.k.a. tractor-trailer, a.k.a. truck and trailer, a.k.a. eighteen-wheeler, a.k.a. big rig, a.k.a. Mack truck, a.k.a. transport, a.k.a. lorry, a.k.a. artic; for box truck; United States Federal length limits)
It's about half as tall as Nelson's Column

The height of Nelson's Column is about 169.40 feet.
(London, England, United Kingdom) (from pedestal first step to tip of statue's hat)
It's about half as tall as The Mahabodhi Temple

The height of The Mahabodhi Temple is about 180 feet.
(a.k.a. Great Awakening Temple, a.k.a. Maha Bodhi Temple, a.k.a. Temple of Bodh Gaya, a.k.a. Mahabodhi Mahavihar) (Bodh Gaya, Gaya District, Bihar, India)
It's about half as tall as The Leaning Tower of Pisa

The height of The Leaning Tower of Pisa is about 185 feet.
(a.k.a. The Tower of Pisa, a.k.a. Torre pendente di Pisa) (Pisa, Italy) (height along center axis)
It's about two times as tall as a Brachiosaurus
The height of a Brachiosaurus is about 43 feet.
(based on comparable bone measurements, height to head)
It's about half as tall as The Cinderella Castle

The height of The Cinderella Castle is about 189 feet.
(Fantasyland, Magic Kingdom, Walt Disney World, Lake Buena Vista and Bay Lake, Florida)
It's about two-and-a-half times as tall as a Telephone Pole
The height of a Telephone Pole is about 36 feet.
(a.k.a. Utility Pole, a.k.a Power Pole, a.k.a. Telegraph Pole, a.k.a. Telegraph Post, a.k.a. Hydro Pole) (exposed height; per Florida Public Service Commission average)
It's about two-fifths as wide as The Wingspan of a 747
The width of The Wingspan of a 747 is about 225 feet.
(a.k.a. Boeing 747, a.k.a. Jumbo Jet, a.k.a. Queen of the Skies) (for Boeing 747-8 series)