Secret of the World

Machu Picchu was first brought to the attention of the world in 1911.The Spanish Invaders at the time of the Conquest never discovered the city and nobody ever led them there , suggesting that the site had long since been abandoned and forgotten.
Mavhu Picchu is a "Inca" town sited in the saddle between two mountains , Machu Picchu (Old Mountain) ,and Huayna Picchu (Young Mountain) , Peru. The buildings all constructed by local stone. After centuries lost in the jungle of Cuzco ,Machu Picchu was rediscovered in 1911 by American archeologist Hiram Bingham. The Inca trail to Machu Picchu is rated as one of the best trekking trails in the world offering stunning landscapes and ancient ruins with diverse ecology.
Most of the construction in Machu Picchu uses the classic Inca architectural style of polished dry-stone walls of regular shape. The Incas were masters of this technique, called ashlar, in which blocks of stone are cut to fit together tightly without mortar.
Other Inca buildings have been built using mortar, but by Inca standards that was quick, shoddy construction. Peru is a highly seismic land, and mortar-free construction was more earthquake-resistant than using mortar. Inca walls show numerous subtle design details that would prevent them from collapsing in an earthquake.
Doors and windows are trapezoidal and tilt inward from bottom to top, corners are usually rounded, inside corners often incline slightly into the rooms, and "L" shaped blocks are often used to tie outside corners together. Walls do not rise straight from top to bottom but are offset slightly from row to row. As a result, Machu Picchu is a city that has stood up well to earthquakes over the years.
According to archaeologists, the urban sector of Machu Picchu was divided into three great districts: the Sacred District, the Popular District, to the south, and the District of the Priests and the Nobility.
On July 7, 2007, Machu Picchu was voted as one of New Open World Corporation's New Seven Wonders of the World.

Abu Simbel are two massive rock temple in Nubia , southern Egypt on the western bank of Lake Nasser about 290 km southwest of Aswan.The twin temples were originally carved out on the mountainside during the reign of Pharaoh Ramesses II in the 13th century BC, as a lasting monument to himself and his queen Nefertari, to commemorate his alleged victory at the Battle of Kadesh, and to intimidate his Nubian neighbor. The Great Temple of Abu Simbel was also relocated in 1964.The relocation was necessary to avoid their submerged during the creation of Lake Nasser.Abu Simbel remains one of Egypt's top tourist attractions.
The Great Temple of Abu Simbel took about 20 years old to built which was completed around year 24 of the reign of Ramesses.It was dedicated to God Amun, Ptah, Ra-horakhty, and it also to the deified Ramesses himself.