
As part of Earth Day many places around the world turned their lights off.
This is what the Sphinx and Pyramids at Giza, Egypt should look like at night.

Since the city of Rio de Janeiro has won the 2016 Olympics I thought I would check out some of the World Heritage Sites in Brazil.
The small city of Ouro Preto is on of Brazil’s sites.
As you can see it is not only an historic city with stunning architecture, it is also a living, working city.
This square in the centre of Brussels is a World Heritage Site.
I visited this place last month. It is not the biggest square I have seen, like Tianenmen Square in Beijing or Red Square in Moscow, but it is surrounded by some beautiful buildings and some delicious waffle shops.
A World Heritage Site since 1983, and constantly voted in many polls as one of the 7 Wonders of the Modern World, this 15th century Inca city is one of the most amazing man-made sights. It is in Peru, not far from the mountain city of Cuzco.
This view from above is taken from the mountain which is often seen in photos standing behind the city.
The turquoise sea surrounds a small green peninsular, which is Butrint.
And where is this exotic place? Albania in Europe (just south of the former Yugoslavia).
December 21st is the time of the winter solstice, the shortest day of the year.
At Stonehenge in England 2,000 crazy people celebrated the rising sun.
Machu Picchu in Peru was built around the year 1450, but abandoned a hundred years later, at the time of the Spanish invasion. It is 2,430 meters above sea level and is often referred to as “The Lost City of the Incas”.
Machu Picchu is now a tourist attraction and about 400,000 people visited the site last year.
Here is a photo which shows all its beauty.
The famous Indian Nobel-winning writer Rabindranath Tagore described the Taj Mahal as ‘a teardrop on the cheek of time.’
In 1631 Mumtaz Mahal, the third wife of Emperor Shah Jahan died during the birth of their 14th child. The emperor was so sad that he ordered a tomb to be built for her. The Taj Mahal was finished in 1648 and is now the tomb of both Mumtaz Mahal and Shah Jahan.
This is a picture of Mumtaz.
The Taj Mahal is more than 350 years old. It is near the city of Agra in India, not so far from the capital city New Delhi. Maybe you can see that the four towers are not straight, they lean away from the main building. This is because if there is an earthquake then the towers will fall outwards and will not destroy the building!
It is one of the most famous buildings in the world.