The Amber Room, often referred to as the “Eighth Wonder of the World”, was one of Russia's most priceless works of art until it was looted by Nazi Germany and lost after the conclusion of WW II.
The greatest tourism and geoscience attraction in the southern hemisphere, in the nineteenth century were the siliceous Pink and White Terraces, the lost Eighth Wonder of the World in New Zealand. In 1886, the Mount Tarawera eruption buried the terraces.
The Eiffel Tower is not considered one of the new Seven Wonders of the World. It was a finalist in the contest held by the New 7 Wonders Foundation, however, it was not selected.
Now, let's get back to our main question, and explore whether Niagara Falls is a wonder of the world. The answer, again, is a No! Niagara Falls doesn't even find a mention in the unofficial list of seven wonders of the world, let alone the official one [if there would be any].
While the entries have varied over the centuries, the seven traditional wonders are the Great Pyramid of Giza, the Colossus of Rhodes, the Lighthouse of Alexandria, the Mausoleum at Halicarnassus, the Temple of Artemis, the Statue of Zeus at Olympia, and the Hanging Gardens of Babylon.
Great Pyramid of Giza, in El Giza, Egypt, the earliest of the wonders to be completed, as well as the only one that still exists in the present day. Colossus of Rhodes, in the harbor of the city of Rhodes, on the Greek island of the same name.
The Statue of Liberty is not considered one of the Seven Wonders of the World. However, it is listed by the United Nations Educational, Scientific and Cultural Organization (UNESCO) as a World Heritage Site.
One of the Seven Wonders of the World, the Grand Canyon is an unbelievable spectacle of nature. It is a great, huge slash in the surface of the earth - 217 miles long, 4 to 18 miles wide and a mile deep, with the Colorado River flowing at the bottom.
Final Verdict: It is absolutely possible to visit all 7 wonders of the world in one month. In fact, you would even spend more time enjoying the sights than you would be traveling. It would approximately take you only 64 hours and 15 minutes of travel on an airplane, which is a little over 3 days.
Despite being a reproduction of the Medieval ages, the Leaning Tower of Pisa was declared as one of the Seven Wonders of the World for its exceptional Romanesque architecture, its sheer size and because it miraculously leans while still holding still.
3. Gustave Eiffel Personally Funded Most of the Tower. It would cost about 30 million euros if the Eiffel Tower were to be built today. When the Tower was built, the government offered to fund a mere 18% of it, leaving Eiffel to personally raise the rest of the money.
The Colossus of Rhodes was the last of the seven to be completed after 280 BC and the first to be destroyed by an earthquake in 226/225 BC. As such, it was already in ruins by the time the list was compiled, and all seven wonders existed simultaneously for less than 60 years.