Here are some amazing structures what have been built over the past few hundred years:

Structure:Akashi Kaikyo Bridge. Location:Kobe, Hyogo (Japan). Fame:World's Longest Suspension Bridge
Akashi Kaikyo Bridge Statistics: Tower Height: 282.8m. Type: Gravity-anchored Suspension Bridge. Main Span: 1991m. Entire Length: 3.8km. Other Information: Each tower contains tuned mass dampers to minimize vibrations. Completion: 1998.

Structure:Petronas Twin Towers. Location:Kuala Lumpur, Asia. Fame:Tallest Office Buildings in the world.
Petronas Twin Towers Statistics: The Petronas Twin Towers earned the much-coveted "Tallest Office Building(s) in the World" title in 1996, when they eclipsed the previous record-holder, the Sears Tower in Chicago, Illinois, U.S.A.. Number of storeys: 88. Overall height: 451.9 metres from street level. Height of superstructure (without pinnacle): 378 metres. Tip of longest pile to tip of pinnacle mast: 592.4 metres. Location of Skybridge: Levels 41 and 42. Length of Skybridge: 58.4 metres. Height of Skybridge: 170 metres from street level. Vertical transportation: 29 Double-deck high speed passenger lifts in each tower.  Number of escalators: 10 in each tower.  Stainless steel cladding: 77,000 square metres.  Vision glass: 65,000 square metres.  Concrete (various strength up to grade 80): 160,000 cubic metres in the superstructure.  Steel: 36,910 tonnes of beam, trusses and reinforcement. Foundation: 4.5 metre (15 feet) thick raft containing 13,200 cubic metres of grade 60 concrete, weighing approximately 32,550 tonnes under each tower, supported by 104 barrette piles from 60 to 115 metres in length.

Tower Bridge
Opened in 1894, Tower Bridge is an enduring symbol of London.
Though river traffic is far less than a hundred years ago the twin bascules are still opened for river traffic several times a week. The London Bridge Experience offer a chance to climb the towers, and view the River from the glass sided walkways, some 140 feet above the Thames, as well as seeing the original steam engines powering the lifting mechanisms for raising the bascules.Fine views across to Butlers Wharf, and on the other bank the Tower of London and St Katherine's Dock. In the early nineteenth century the Dock would have been full of sailing ships from around the world, discharging their cargoes. Nowadays the Docks are a popular tourist destination in their own right with shops, and a display of sailing barges in the marina.

Facts about the London eye:

How high do you fly on the Eye?
135 metres above the London skyline - you'll be twice the height of the famous Prater Wheel in Vienna and 30 metres higher than the previous tallest observation wheel in Yokohama Bay.

How much steel has been used to build it?
Over 1,700 tonnes of steel have been used in the construction, that's heavier than the combined weight of 250 double decker buses.

How far can passengers see?
You can see up to 25 miles in each direction with views over some of the world's most famous sights, including St Paul's, the Palace of Westminster and Windsor Castle.

How much power does it use?
The ongoing requirement of 500kW is equivalent to six light bulbs for every person travelling on the Eye, when the wheel is at it's full capacity.

How much cabling is used?
The 80 'spokes' of the London Eye use a total of six kilometres of cable - enough to run from Trafalgar Square to Canary Wharf in London.

How many visitors can fly the Eye each day?
The 32 high-tech passenger capsules can carry over 15,000 visitors a day, enough to fill Concorde more than 150 times over.

                                 
Capsules
The passenger capsules of the London Eye incorporate an entirely new design form for observation wheels. Instead of being suspended under gravity they turn within circular mounting rings fixed to the outside of the main rim, thereby allowing a spectacular 360 - degree panorama at the top.