Cairo is bursting at the seams, so Egypt is building a new $58 billion capital 30 miles away. Take a look.

• In an attempt to tackle overcrowding in Cairo, Egypt's government decided to build a new capital. 
• The city, which already holds Africa's tallest building, is expected to cost $58 billion to build.
• The eye-watering cost of the project has drawn criticism from some quarters.

Like Indonesia, Egypt is building a new capital — although in this case, it's responding to the challenge of overcrowding.

The existing capital, Cairo, is home to about 22 million people, making it one of the world's most densely populated metropolitan areas. Policymakers believe that constructing new city could help to reduce congestion there.