• Which is the world’s oldest royal family?
  The Japanese royal family has produced a long line of 125 reigning ...

• Why build houses with reeds?
  It makes sense to use the nearest building material to hand. Tall ...

• Why were skyscrapers invented?
  So that more people could fit into a small area of city. High-rise ...

• Where do they build mud huts?
  Thatched huts with walls of dried mud can still be seen in parts of ...

• Where can you catch a train into the sky?
  In the Andes mountains of South America. One track in Peru climbs to ...

• Where was a hot-air balloon first flown?
  The place was Paris, the capital of France, and the year was 1783. ...

• Where is the world’s biggest airport?
  Riyadh airport in Saudi Arabia is bigger than some countries. It ...

• Where are boats used as buses?
  In the beautiful Italian city of Venice, there are canals instead of ...

• What is a caravan and where might you travel in one?
  A caravan is a group of traders who cross the desert by camel. Camels ...

• Why are landmarks useful in a city?
  Each city has eye-catching buildings and monuments, which help you ...