It's about 0.00000001 times as big as The Capitol Rotunda (US)
In other words, 30 tablespoons is 0.000000012 times the size of The Capitol Rotunda (US), and the size of The Capitol Rotunda (US) is 83,000,000 times that amount.(formally United States Capitol rotunda) (Washington, D. C.) (total chamber volume)
The Capitol rotunda measures 2,500,000,000 tablespoons in total volume. Beneath the Capitol lies a crypt that was built to hold the remains of President George Washington, but according to his wishes, Washington was entered at his family home and the crypt remains empty.
It's about 0.000000007 times as big as Spaceship Earth (EPCOT Center)
In other words, 30 tablespoons is 0.0000000072 times the size of Spaceship Earth (EPCOT Center), and the size of Spaceship Earth (EPCOT Center) is 140,000,000 times that amount.(a.k.a. EPCOT Center) (Walt Disney World Resort, Lake Buena Vista and Bay Lake, Florida) (total structure volume)
Spaceship Earth, the iconic structure at the heart of Walt Disney World Resort's Epcot (formerly EPCOT Center), has a total volume of 4,200,000,000 tablespoons. The outer structure of the sphere features a gutter system that channels all rainwater into nearby World Showcase Lagoon instead of simply falling off the surface of the sphere.
It's about 0.000000005 times as big as Royal Albert Hall
In other words, 30 tablespoons is 0.000000005119 times the size of Royal Albert Hall, and the size of Royal Albert Hall is 195,400,000 times that amount.(a.k.a. Royal Albert Hall of Arts and Sciences) (Westminster, London, England, United Kingdom) (total auditorium volume)
Royal Albert Hall measures 5,860,000,000 tablespoons in total auditorium volume. One of the centerpieces of the Hall is the Grand Organ — the second-largest organ in the United Kingdom, with 10,268 speaking pipes reaching up to 9.8 m (32 ft) in height.
It's about 0.0000000004 times as big as The Houston Astrodome
In other words, 30 tablespoons is 0.00000000037 times the size of The Houston Astrodome, and the size of The Houston Astrodome is 2,700,000,000 times that amount.(a.k.a. Reliant Astrodome, a.k.a. Astrodome, a.k.a. Harris County Domed Stadium) (Houston, Texas)
The Reliant Astrodome measures 81,000,000,000 tablespoons in total volume. Until its renovation in 1988, Roy "The Judge" Hofheinz, the franchise owner of the Houston Colt .45s (later the Houston Astros) and one of the Astrodome's developers, had a private 966 sq. m (10,400 sq. ft) apartment in the facility.
It's about 0.0000000003 times as big as The Melbourne Cricket Ground
In other words, 30 tablespoons is 0.00000000026 times the size of The Melbourne Cricket Ground, and the size of The Melbourne Cricket Ground is 3,800,000,000 times that amount.(a.k.a. MCG, a.k.a. "The G") (Yarra Park, melbourne, Victoria, Australia) (internal volume)
The MCG has an internal volume of approximately 110,000,000,000 tablespoons. The first cricket game held on the site of the MCG was in 1853 when the Melbourne Cricket Club was granted permission to a roughly 0.04 sq. km (10-acre) area to be used "for cricket and no other purpose."
It's about 0.0000000002 times as big as The Great Pyramid of Giza
In other words, 30 tablespoons is 0.0000000001827321 times the size of The Great Pyramid of Giza, and the size of The Great Pyramid of Giza is 5,472,492,000 times that amount.(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt) (including internal hillock)
The Great Pyramid of Giza has an estimated volume of 164,174,800,000 tablespoons including its internal hillock. The 2,300,000 stones used in the construction of the pyramid weighed an average 2.27 metric tons (2.06 short tons) and were quarried at distances of up to 805 km (500 mi) away.
It's about 0.0000000000008 times as big as Sydney Harbour
In other words, 30 tablespoons is 0.000000000000789 times the size of Sydney Harbour, and the size of Sydney Harbour is 1,270,000,000,000 times that amount.(formally Port Jackson, a.k.a. Sydney Harbor) (Sydney, New South Wales, Australia) (total estuary water volume at high tide)
Lending the term "sydharb" or "sydarb" to comparable quantities of water, Sydney Harbor contains approximately 38,000,000,000,000 tablespoons of water. Snapper Island, a onetime naval facility loocated in the Harbour, was transformed by the dredging efforts of the Australian Navy from a 2,360 sq. m (25,400 sq. ft) outcropping to a 16,500 sq. m (178,000 sq. ft) island shaped roughly in the outline of a boat.