Snellen chart. A wall chart developed by a Dutch ophthalmologist Hermann Snellen in the 19th century, which is still used today to measure visual acuity. It consists of 11 lines of block letters of decreasing size, which are to be read at a distance of 6 metres (20 feet).
See bridge in maps. Pont de Normandie is a cable-stayed road bridge that crosses the river Seine and contect Le Havre to Honfleur in Normandy, in France. The bridge was designed by Michel Virlogeux. Construction began in 1988 and the bridge was opened in January 1995.
Paris's Arc de Triomphe, the largest triumphal arch in the world, is at the center of the Place Charles de Gaulle-Ãtoile, at the northwest end of the Avenue des Champs-ÃlysÃ©es (map). The huge arch was commissioned by Napoleon in honor of his Grande ArmÃ©e and its 128 victorious battles (1805-1809).