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.

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

Aurora Borealis

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.

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

The Great Barrier Reef

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 nineteenth and early twentieth centuries. In 2003 the BBC made a seven-part documentary series on the book, with each episode dramatising the construction 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
  

  London Swerage System

Man-made travel wonders

1. Giza pyramid complex
2. Great Wall of China
3. Taj Mahal
4. Machu Picchu
5. Bali
6. Angkor Wat
7. Forbidden City
8. Bagan Temples and Pagodas
9. Karnak Temple
10. Teotihuacán

Natural travel wonders

1. Serengeti Migration
2. Galápagos Islands
3. Grand Canyon
4. Iguazu Falls
5. Amazon Rainforest
6. Ngorongoro Crater
7. Great Barrier Reef
8. Victoria Falls
9. Bora Bora
10. Cappadocia

The Seven Wonders of the Ancient World is the first known list of the most remarkable man-made 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, including lists for the Medieval World and the Modern World.

First lets see about,

Seven Wonders of the Ancient World

The historian Herodotus (484 BC–ca. 425 BC), and the scholar Callimachus of Cyrene (ca 305–240 BC) 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 Baby
• 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.

Wonders of the Medieval World

Many lists of wonders of the world are said to have existed during the Middle Ages, although it is unlikely that these lists originated at that time because the word medieval was not even 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 of the seven greatest wonders of the Medieval world are:

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

Other sites included on such lists:

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

TajMahal in INDIA

Wonders of the modern world

Many lists have been made 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:^[10]

New7Wonders Foundation’s seven wonders of the world

In 2001 an initiative was started by the Swiss corporation New7Wonders Foundation to choose theNew Seven Wonders of the World from a selection of 200 existing monuments for profit. 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. To solve this, Giza was named an honorary Candidate.The results were announced on July 7, 2007:

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 from viewer feedback.