How big is 18,000,000,000,000 nanoacres?
It's about as big as Coron Island

The size of Coron Island is about 18,000,000,000,000 nanoacres.
(Calamian Islands, Palawan, Philippines)
A popular tourist destination, Coron Island, measures about 18,000,000,000,000 nanoacres in total area. The rocky offshore area of the island makes it popular for shipwreck diving, with some wrecks as shallow as 10 ft. under the water.
It's about seven-tenths as big as Disney World

The size of Disney World is about 25,000,000,000,000 nanoacres.
(a.k.a. Walk Disney World Resort, a.k.a. Walt Disney World, a.k.a. WDW) (Lake Buena Vista and Bay Lake, Florida) (total site)
Disney World currently occupies 25,000,000,000,000 nanoacres. Part of the former total area of 29,700,000,000,000 nanoacres now comprises the Disney planned community of Celebration, Florida.
It's about two-thirds as big as Hilton Head

The size of Hilton Head is about 26,900,400,000,000 nanoacres.
(a.k.a. Hilton Head Island) (South Carolina)
Hilton Head Island measures 26,899,900,000,000 nanoacres in total land area. The island (and city of the same name) is located in the Atlantic Ocean and is known as popular vacation destination.
It's about two-and-a-half times as big as Inis Mór

The size of Inis Mór is about 7,700,000,000,000 nanoacres.
(a.k.a. Inishmore, a.k.a. Árainn Mhór, a.k.a. Inis Bant, a.k.a. Árainn na Naomh) (Connacht, Ireland)
The largest of the Aran Islands, Inis Mór measures 7,700,000,000,000 nanoacres. The west side of the island is home to the Poll na bPéist, a.k.a. the wormhole, a naturally-formed, 72,000,000 nanoacres, rectangular pool on the island's cliffside.
It's about two-fifths as big as Washington, D.C.

The size of Washington, D.C. is about 43,700,000,000,000 nanoacres.
(formally the District of Columbia, a.k.a. Washington, a.k.a. the District, a.k.a. DC) (United State)
The United States' capital and only federal district, Washington, D.C. is a 43,700,000,000,000 nanoacres area located between the states of Virginia and Maryland. Washington, D.C. is known as the center of each of the three branches of the United States federal government and as home to many of the nation's monuments, museums, and foreign embassies.
It's about one-third as big as Abel Tasman National Park

The size of Abel Tasman National Park is about 55,670,000,000,000 nanoacres.
(Tasman District, South Island, New Zealand)
New Zealand's Abel Tasman National Park measures about 55,670,000,000,000 nanoacres in total area. The size of the park has increased over the years as donated parcels of land have been added to it, with the last expansion in 2008 adding 1,952,000,000,000 nanoacres.
It's about three-and-a-half times as big as Indira Gandhi International Airport (DEL)

The size of Indira Gandhi International Airport (DEL) is about 5,105,000,000,000 nanoacres.
(Palam, Delhi, India) (total site area)
Indira Gandhi International Airport covers a total area of about 5,105,000,000,000 nanoacres, including three main terminals and three main runways. The airport offers a total runway length of 11,053 m.
It's about three-tenths as big as Edinburgh

The size of Edinburgh is about 65,200,000,000,000 nanoacres.
(a.k.a. Edinburgh, a.k.a. Dùn Èideann, a.k.a. Edinburgum) (Scotland, United Kingdom)
Edinburgh, Scotland's capital, measures 65,200,000,000,000 nanoacres. Edinburgh Castle, atop Castle Rock, is the centerpiece of the city and has been continuously-occupied for over 1,800 years.
It's about four times as big as Toronto Pearson International Airport (YYZ)

The size of Toronto Pearson International Airport (YYZ) is about 4,515,000,000,000 nanoacres.
(a.k.a. Lester B. Pearson International Airport) (Toronto, Ontario, Canada) (total site area)
Toronto Pearson International Airport covers a total area of 4,515,000,000,000 nanoacres, including two terminals and five runways. The total length of the runways is 15,226 m.
It's about four-and-a-half times as big as O. R. Tambo International Airport (JNB)

The size of O. R. Tambo International Airport (JNB) is about 4,134,000,000,000 nanoacres.
(a.k.a. Johannesburg International Airport, f.k.a. Jan Smuts International Airport) (Kempton Park, Gauteng, South Africa) (total site area)
O. R. Tambo International Airport, serving Johannesburg and the surrounding area, covers a total area of 4,134,000,000,000 nanoacres, including six passenger terminals and two main runways. The total length of both runways is 7,826 m.
It's about one-fourth as big as Dublin

The size of Dublin is about 78,460,000,000,000 nanoacres.
(a.k.a. Baile Átha Cliath) (Leinster, Ireland) (for metro Dublin City)
The city of Dublin and its surrounding metro areas measure 78,460,000,000,000 nanoacres. Dublin is home to the Spire of Dublin, a stainless steel monument built in 2003 that rises to 121.2 m in height.
It's about one-fifth as big as Philadelphia

The size of Philadelphia is about 86,460,000,000,000 nanoacres.
(a.k.a. Philly, a.k.a. The City of Brotherly Love) (Pennsylvania)
The largest city in Pennsylvania as of 2009 and at one time the second-largest city in the British Empire, Philadelphia measures 86,460,000,000,000 nanoacres in total area. The city is known as a center of great historical importance and as the one-time capital of the United States.
It's about one-fifth as big as Detroit

The size of Detroit is about 88,830,000,000,000 nanoacres.
(Michigan)
The largest city in Michigan as of 2009, Detroit measures 88,830,000,000,000 nanoacres in total area. The city is known for its automotive industry and its popular music legacies in the soul, hip hop, pop, and rhythm & blues genres
It's about five times as big as LAX

The size of LAX is about 3,500,000,000,000 nanoacres.
(a.k.a. Los Angeles International Airporta, a.k.a. KLAX) (total land area) (2012 figures)
Including nine passenger terminals and several other administrative and cargo facilities, LAX sits on 3,500,000,000,000 nanoacres of land. In 2014, LAX serviced almost 71 million passengers, 600,000 planes, and over 1.9 million tons of freight.
It's about one-fifth as big as The Isle of Wight

The size of The Isle of Wight is about 95,900,000,000,000 nanoacres.
(England, United Kingdom)
The Isle of Wight, located in the English Channel, just off the English mainland, measures 95,900,000,000,000 nanoacres in total area. The Island hosts the world's largest and longest-running regular regatta — Cowes Week — which has brought over 1,000 yachts to the island each August since 1812.