The Serpentine Railway, built in 1885 at Coney Island, was the first gravity roller coaster to tie the track end together and return passengers to their starting point without them needing to disembark while the car was placed on the return track. The train, with its passengers seated sideways on a wooden bench, ran atop an undulating wooden structure.

The famed London Bridge which spanned the River Thames for almost 140 years from the 1830s until 1968, now connects Arizona's Lake Havasu City's mainland and island. The bridge survived a terrorist attack in 1884 and the bombing from the Germans in both World Wars. But it could not withstand the forces of nature, as it was sinking into the Thames River's clay bottom.

The Statue of Liberty is 145 feet high and weighs 450,000 pounds, or 255 tons. The copper sheeting weighs 200,000 pounds. It was a gift from the French people to the American people as a symbol of friendship.

The Statue of Liberty's index finger is 8 feet long, and it displays a fingernail measuring 13 by 10 inches.

The Step Pyramid is the first known monumental structure made of stone anywhere in the world.

A building in which silence is enforced, like a library or school room, is referred to as a "silentium."

A huge 52-foot-high (16-meter), fiberglass pineapple icon greets visitors outside The Big Pineapple, a huge pineapple plantation and tourist attraction at Queensland, Australia.

A man-made fountain opposite the Gateway Arch in St. Louis is the world's highest geyser, at 600 feet.

The tallest artificial structure in the world is the KTHI-TV tower in North Dakota, at a height of 2,063 feet.

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The tiniest jail in North America is in Rodney, Ontario, near the southwestern Ontario city of London. Built in 1890 and now a tourist attraction, the 24.3 square metre jail had two cells.

The top of the Empire State Building was originally intended as a mooring place for dirigibles.

The Tower of London, for which construction was begun in 1078 by William the Conqueror, once housed a zoo. It also has served as an observatory, a mint, a prison, a royal palace, and (at present) the home of the Crown Jewels.

The twin towers of New York's World Trade Center contain 208 elevators.

The Golden Gate Bridge in San Francisco took 25 million man-hours to build.

Arlington National Cemetery occupies 612 acres in Virginia on the Potomac River, directly opposite Washington, D.C.

At the Monterey Bay Aquarium in California, pumps push more than 2,000 gallons of sea water a minute through jets placed to generate natural currents in the aquarium's kelp forest exhibit.

Australia's new parliament house in the nation's capital Canberra is one of the largest buildings in the southern hemisphere. The building covers nearly 15 percent of a 32-hectare site and boasts 4,500 rooms. Its floor space is approximately 250,000 square meters.

Bricks are the oldest manufactured building material still in use. Egyptians used them 7,000 years ago.

Britain's Buckingham Palace consists of 600 rooms.

Built in 1967, the world’s only flying saucer launching pad is in St. Paul, Alberta, Canada.

Built in only 16 months between 1941 and 1942, the Pentagon is only 71ft tall and yet it has 5 floors, 17.5 miles of corridors, 131 stairways, 284 restrooms, 691 drinking fountains, and 7,754 windows.

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