Landmarks designate places of interest and peek the interest of many. Discover the massive stones used to erect Stonehenge and the Leaning Tower of Pisa.

Of the Seven Wonders of the Ancient World, only one still exists -- the pyramids of Giza. he Great Pyramid, Egypt's largest, is an astonishing structure completed more than 4,500 years ago. Check out the Pyramids of Giza and the Great Sphinx.

Taking its scale from the gods themselves, the Karnak temple complex was devoted to the Theban Triad: Amun, Mut, and their son Khonsu. The 53-acre compound was developed by Egyptian kings over a period of 1,700 years. Read about the Temple at Karnak.

Ancient Egypt's greatest egotist and builder, Ramses II erected more temples and statues -- of himself, naturally -- than any other pharaoh. His most impressive works are the two rock temples at Abu Simbel.

To Muslims around the world, the most sacred spot on earth is a black-draped, square shrine called the Kaaba, which stands in the central courtyard of the vast Al-Haram Mosque in Makkah. Learn more about the Kaaba and Al-Haram Mosque.

This maze of 800 buildings in Beijing was off limits to ordinary mortals, being the exclusive precinct of China's emperors and their courts for 500 years. Read about the Forbidden City.

Towering and mysterious, the Pyramids of the Sun and Moon rise above Teotihuacán, an empty city that once bustled with as many as 200,000 people and stood at the center of Mexico's pre-Hispanic empire. Check out the Pyramids of the Sun and Moon.

Mysterious and enchanting this mountain city remained hidden from outsiders for centuries after the Incas abandoned it. Intricately devised buildings and ceremonial centers make it a world-renowned tourist attraction.

The stone figures gaze across Easter Island through eyes hooded in shadow. The place where they stand floats alone in the South Pacific, about 2,000 miles from the coast of Chile. Learn about Easter Island, the most remote inhabited island on Earth.

Big Ben, the River Thames, Westminster Hall: This is where the heart of London history lies. Fires and war bombs couldn't shake these structures that so grandly stand over the river.

This is the church for true Londoners and the ceremonial heart of the city -- this is St. Paul's. During World War II the Anglican cathedral stood during the bombs and blazes of the Blitz giving courage to all England.

No one knows who erected the massive Stonehenge or why but the romance and mystery of it continue to fascinate. Even today during the summer solstice you can stand at the central Altar Stone and witness the sun rising precisely over the Heel Stone lo

For 2,000 years, the reputation of Bath has come from its hot mineral springs, a bathing complex and a temple devoted to Sulis Minerva, the Romano-Celtic goddess of healing.

Edinburgh Castle is exactly what you would expect a Scottish castle to look like -- standing high on a peak and hard as a rock, with stone walls and ramparts rising out of a volcanic crag. Find out more about the historic landmark, Edingburgh Castle.

Strong as iron and delicate as lace, the Eiffel Tower is the romantic symbol of Paris. Its design was disdained by the city's artists and writers, who protested the tower's construction for the Universal Exposition. Read about the Eiffel Tower.

The Arc de Triomphe, the world's largest triumphal arch, rises at the west end of the famous Champs-Elysees in Paris. No less a figure than Napoleon commissioned the monument in 1806 to honor his military victories. Read about the Arc de Triomphe.

The Palace of Versailles: The world's most opulent playground for royalty! A chateau large enough to house 6,000 courtiers! A palace fit for a king! And not just any king, but Louis XIV. Read more about the extravagant Palace of Versailles.

As the sun travels across the sky, the famous stained glass windows within Chartres Cathedral change colors and patterns. Streams of tinted light pour across the lofty space, filling it with the glory of God. Learn more about Chartes Cathedral.

Standing 2310 feet atop a mountain the 100-foot-tall Christ the Redeemer Statue rises in splendor above Rio de Janeiro Brazil. Learn how this magnificent statue came to watch over the sprawling city of Rio.

The CN Tower stands 1,815 feet, 5 inches high, or the equivalent of 12 Statues of Liberty stacked on top of each other. And while we're making comparisons, it weighs 130,000 tons, equal to 23,214 large elephants. Read about vacations to CN Tower.