Photo series 'then and now' proves the unparalleled power of time that makes the world change rapidly

No matter what happens in this world, time will always pass, everything of today will gradually become the past, the past. Everything in this world must go through the impact of time. That is why it is said that time possesses terrible power.

Thanks to the advancement of technology, photos are kept year after year. When we look back, we are startled to realize that there have been so many changes. The series of "then and now" photos of famous places below is clear evidence of that.

1. Chichen Itza Pyramid, Mexico

The Chichen Itza Pyramid is one of the most mysterious ancient structures of the ancient Mayan civilization, built by the Mayans in Central America around the 11th century. It is also known by other names such as the Kukulkan Pyramid or El Castillo. In 2007, this pyramid became one of the 7 new wonders of the world.

2. Colosseum, Rome, Italy

The Colosseum is located in central Rome, Italy. It is the largest ancient amphitheatre ever built and is still considered the largest today, despite its age. The Colosseum was first used for entertainment purposes and was decommissioned in the early Middle Ages. It was later repurposed for workshops, housing, and other purposes.

3. Machu Picchu, Eastern Cordillera, Peru

Machu Picchu is one of the most fascinating ancient ruins in existence. It was built by the Incas in the 15th century and is located in the Eastern Cordillera, southern Peru. Archaeologists today believe that the ancient Inca city was built between 1438 and 1472. Many people also call it the 'Lost City of the Incas'.

4. The Great Wall of China

The Great Wall was built over a period of 2,000 years, by several dynasties in China, from the Western Zhou Dynasty to the Qing Dynasty. In addition to defense, the main purposes of the Great Wall included border control, allowing for the imposition of taxes on goods moving along the Silk Road, regulating or promoting trade, and managing immigration and emigration.

5. Tulum, Quintana Roo, Mexico

Tulum is a pre-Columbian Mayan ruin that was once the main port of Coba, in the Mexican state of Quintana Roo. The ruins are located on 12-meter-high cliffs along the eastern coast of the Yucatán Peninsula in the Caribbean Sea.

6. Hampi, Vijayanagara district, Karnataka, India

Hampi was the capital of the Vijayanagara Empire in the 14th century. According to the chronicles of Persian and European explorers, mainly the Portuguese, Hampi was a prosperous, wealthy and colossal city beside the Tungabhadra River, with many temples, farms and trading markets. It was later destroyed by the conquerors, leaving the city in ruins.

7. Angkor Wat, Cambodia

Angkor Wat is a temple complex in Cambodia built in the 12th century. The Khmer translation of the contemporary name Angkor Wat, also known as Nokor Wat, is 'Temple City' or 'City of Temples'.

8. Roman Forum, downtown Rome, Italy

The Roman Forum is located in the center of Rome. It is also known by its Latin name Forum Romanum, and is surrounded by the ruins of several ancient government buildings.

For centuries, this square has been the center of daily life in Rome. It also houses many famous and important buildings.

9. Hoover Dam, USA

This dam is located on the border between the US states of Nevada and Arizona. Through the photo, we can see how much the water level has dropped over the past decades.