The Eiffel Tower, which was built in 1887, is the most famous monument of Paris.
The Copernicus Science Centre is a science museum, where you can see over 450 interactive exhibits.
A tour guide is a person who shows you round places and gives you interesting information about them.
Backpackers are people who travel or hike carrying their stuff in a rucksack or backpack.
Canada, which is the second largest country in the world, is in North America.
The Wawel, which was the first UNESCO World Heritage Site in the world, is located in Kraków.
