Wonders of the modern world

Many organisations have made lists of the greatest structures built during modern times, or of the greatest wonders existing today. Some of the most notable lists are presented below.

 American Society of Civil Engineers

The American Society of Civil Engineers compiled a list of wonders of the modern world:

Wonder	Date started	Date finished	Location
Channel Tunnel	December 1, 1987	May 6, 1994	Strait of Dover, between the United Kingdom and France
CN Tower	February 6, 1973	June 26, 1976, tallest freestanding structure in the world 1976–2007.	Toronto, Ontario, Canada
Empire State Building	January 22, 1930	May 1, 1931, Tallest structure in the world 1931–1967. First building with 100+ stories.	New York, NY, U.S.
Golden Gate Bridge	January 5, 1933	May 27, 1937	Golden Gate Strait, north of San Francisco, California, U.S.
Itaipu Dam	January 1970	May 5, 1984	Paraná River, between Brazil and Paraguay
Delta Works/ Zuiderzee Works	1920	May 10, 1997	Netherlands
Panama Canal	January 1, 1880	January 7, 1914	Isthmus of Panama

 New7Wonders Foundation

Main article: New Seven Wonders of the World

In 2001 an initiative was started by the Swiss corporation New7Wonders Foundation to choose the New Seven Wonders of the World from a selection of 200 existing monuments. Twenty-one finalists were announced January 1, 2006. Egypt was not happy with the fact that the only original wonder would have to compete with the likes of the Statue of Liberty, the Sydney Opera House, and other landmarks; and called the project absurd. In response, Giza was named an honorary Candidate. The results were announced on July 7, 2007:

Wonder	Date of construction	Location
Great Wall of China	5th century BCE – 16th century CE	China
Petra	c.100 BCE	Jordan
Christ the Redeemer	Opened 12 October 1931	Brazil
Machu Picchu	c.1450 CE	Peru
Chichen Itza	c.600 CE	Mexico
Colosseum	Completed 80 CE	Italy
Taj Mahal	Completed c.1648 CE	India
Great Pyramid of Giza (Honorary Candidate)	Completed c.2560 BCE	Egypt

 USA Today's New Seven Wonders

In November 2006 the American national newspaper USA Today in conjunction with the American television show Good Morning America revealed a list of New Seven Wonders as chosen by six judges. The wonders were announced one per day over a week on Good Morning America. An eighth wonder was chosen on November 24, 2006 from viewer feedback.

Number	Wonder	Location
1	Potala Palace	Lhasa, Tibet, China
2	Old City of Jerusalem	Jerusalem[n 1]
3	Polar ice caps	Polar regions
4	Papahānaumokuākea Marine National Monument	Hawaii, United States
5	Internet	Earth
6	Maya ruins	Yucatán Peninsula, México
7	Great Migration of Serengeti and Masai Mara	Tanzania and Kenya
8	Grand Canyon (viewer-chosen eighth wonder)	Arizona, United States

 Seven Natural Wonders of the World

Similar to the other lists of wonders, there is no consensus on a list of seven natural wonders of the world, as there has been debate over how large the list should be. One of the many lists was compiled by CNN:

• Grand Canyon
• Great Barrier Reef
• Harbor of Rio de Janeiro
• Mount Everest
• Aurora
• Parícutin volcano
• Victoria Falls

New7Wonders of Nature is a contemporary effort to create a list of seven natural wonders chosen by people through a global poll, organized by New Open World Corporation (NOWC), which ran the New Seven Wonders of the World campaign.
Seven Natural Wonders: is a not for profit endeavour created to protect the seven natural wonders that have already been established.

 Seven Wonders of the Underwater World

The Seven Underwater Wonders of the World was a list drawn up by CEDAM International, an American-based non-profit group for divers, dedicated to ocean preservation and research.
In 1989 CEDAM brought together a panel of marine scientists, including Dr. Eugenie Clark, to pick underwater areas which they considered to be worthy of protection. The results were announced at The National Aquarium in Washington DC by actor Lloyd Bridges, star of TV's Sea Hunt:

• Palau
• Belize Barrier Reef
• Great Barrier Reef
• Deep-Sea Vents
• Galápagos Islands
• Lake Baikal
• Northern Red Sea

 Seven Wonders of the Industrial World

Main article: Seven Wonders of the Industrial World

British author Deborah Cadbury wrote Seven Wonders of the Industrial World, a book telling the stories of seven great feats of engineering of the 19th and early 20th centuries. In 2003 the BBC made a seven-part documentary series on the book, with each episode dramatising the construction of one of the wonders. The seven industrial wonders are:

• SS Great Eastern
• Bell Rock Lighthouse
• Brooklyn Bridge
• London sewerage system
• First Transcontinental Railroad
• Panama Canal
• Hoover Dam

 Other lists of wonders of the world

Numerous other authors and organisations have composed lists of the wonders of the world. Travel writer Howard Hillman published two books on the subject, one with 10 man-made wonders, and one with 10 natural wonders. British biographer, science writer, and novelist Ronald W. Clark is another who has published a list of man-made and natural wonders, in his book Wonders of the World. Rather than having only seven wonders of the world to match the number of days in a week, Clark's list includes 52 wonders, one for each week of the year.

Medieval World

In the 19th and early 20th centuries, some writers claimed that lists of wonders of the world have existed during the Middle Ages, although it is unlikely that these lists originated at that time because the word medieval was not invented until the Enlightenment-era, and the concept of a Middle Age did not become popular until the 16th century. Brewer's refers to them as "later list[s]" suggesting the lists were created after the Middle Ages.
Many of the structures on these lists were built much earlier than the Medieval Ages, but were well known. These lists go by names such as Wonders of the Middle Ages (implying no specific limitation to seven), Seven Wonders of the Middle Ages, Medieval Mind and Architectural Wonders of the Middle Ages.
Typically representative are:

• Stonehenge
• Colosseum
• Catacombs of Kom el Shoqafa
• Great Wall of China
• Porcelain Tower of Nanjing
• Hagia Sophia
• Leaning Tower of Pisa

Other sites sometimes included on such lists:

• Taj Mahal
• Cairo Citadel
• Ely Cathedral
• Cluny Abbey

Seven Wonders of the Ancient World

The Great Pyramid of Giza, the only wonder of the ancient world still in existence.

The Colosseum in Rome.

The Great Wall of China.

Hagia Sophia.

Taj Mahal.

Golden Gate Bridge.

Chichen Itza.

Old City of Jerusalem.

The Aurora Borealis or Northern Lights.

Grand Canyon

The Great Barrier Reef.

The London sewerage system's original Abbey Mills pumping station.

Machu Picchu.

The historian Herodotus (484 – ca. 425 BCE), and the scholar Callimachus of Cyrene (ca. 305 – 240 BCE) at the Museum of Alexandria, made early lists of seven wonders but their writings have not survived, except as references. The seven wonders included:

• Great Pyramid of Giza
• Hanging Gardens of Babylon
• Statue of Zeus at Olympia
• Temple of Artemis at Ephesus
• Mausoleum of Maussollos at Halicarnassus
• Colossus of Rhodes
• Lighthouse of Alexandria

The earliest lists had the Ishtar Gate as the seventh wonder of the world instead of the Lighthouse of Alexandria.
The list known today was compiled in the Middle Ages—by which time many of the sites were no longer in existence. Today, the only ancient world wonder that still exists is the Great Pyramid of Giza.

Wonders of the World

Various lists of the Wonders of the World have been compiled from antiquity to the present day, to catalogue the world's most spectacular natural wonders and manmade structures.
The Seven Wonders of the Ancient World is the first known list of the most remarkable creations of classical antiquity, and was based on guide-books popular among Hellenic sight-seers and only includes works located around the Mediterranean rim. The number seven was chosen because the Greeks believed it to be the representation of perfection and plenty. Many similar lists have been made.