The Petronas Towers
The Petronas Towers are twin skyscrapers located in Kuala Lumpur, Malaysia, and were the tallest buildings in the world from 1998 to 2004. The towers are 452 meters (1,483 feet) tall and include 88 floors. The engineering challenges of the Petronas Towers included designing and building the structure to withstand high winds and earthquakes, managing the vertical transportation of people and goods, and ensuring the safety and comfort of the occupants.
The Akashi Kaikyo Bridge
The Akashi Kaikyo Bridge is a suspension bridge located in Kobe, Japan, and is the longest suspension bridge in the world. The bridge spans the Akashi Strait, which is one of the busiest shipping lanes in the world. The bridge is 3.9 kilometers (2.4 miles) long and includes two main towers that are 300 meters (984 feet) tall. The engineering challenges of the Akashi Kaikyo Bridge included designing and building the massive towers and cables, ensuring the stability of the bridge in high winds and seismic activity, and providing access to maintenance and emergency services.