What is the most expensive object ever built?

A - Burj Khalifa
B - International Space Station
C - Hinkley Nuclear Power Station
D - Hong Kong International Airport

Answer: B - International Space Station
The International Space Station is the single most expensive object ever built. At a cost of nearly $160 billion dollars (and rising, as new sections are added), very few things even come close. Humanity’s most expensive single object floats 248 miles above the Earth and houses an international crew of six astronauts that live and work while traveling at a speed of five miles per second, and orbiting the Earth approximately every 93 minutes. The space station is 357 feet end-to-end, and is the largest artificial satellite that has ever orbited the planet