What is this structure ?
House
What is this structure ?
Building
What is this material ?
Iron
What is this material ?
Nail
What is this structure ?
Wood House
What is this structure ?
Mansion
What is this structure ?
Golden Gate Bridge
What is this structure ?
Igloo
What is this structure ?
Spider Web
What is this structure ?
Bird Nest
What is this structure ?
Tipi
What is this structure ?
Eiffel Tower
What is this structure ?
Mountain
What is this structure ?
Castle
What is this material ?
Wood
What is this material?
Steel
