Bridge 1

Brooklyn Bridge was built to connect the island of Manhattan to Brooklyn. At almost 1,600 feet, at the time of its completion in 1883, it was the longest suspension bridge in the world. Its architecture remains a wondrous sight in the New York cityscape. After dark, the twin Gothic towers and strong steel cables make a striking silhouette against the night sky. Walking across the bridge is a huge thrill, particularly if you start from the Brooklyn side and view the Manhattan skyline on your stroll across the East River

Bridge 2

Chicago Bridge & Iron Company (Chicago Bridge & Iron Company N.V.), (NYSECBI), known commonly as CB&I, is a large multinational conglomerate engineering, procurement and construction (EPC) company. CB&I specializes in projects for oil and gas companies. CB&I operates from more than 80 locations around the world, and as of August 1, 2009, CB&I has a total of approximately 16,000 employees.

Bridge 3

The San Francisco – Oakland Bay Bridge (known locally as the Bay Bridge) is a pair of bridges spanning San Francisco Bay of California, in the United States. Forming part of Interstate 80 and of the direct road route between San Francisco and Oakland, it carries approximately 270,000 vehicles per day on its two decks.[3] It has one of the longest spans in the world.

Tunnel 1

Tunnel 2

Mule trail for people to transport mules safely.

Tunnel 3

The Seikan Tunnel is a 53.85-kilometre (33.46 mi) railway tunnel in Japan, with a 23.3-kilometre (14.5 mi) long portion under the seabed. Track level is about 140 metres (460 ft) below seabed and 240 m (790 ft) below sea level.[1] It travels beneath the Tsugaru Strait—connecting Aomori Prefecture on the Japanese island of Honshu and the island of Hokkaido—as part of the Kaikyo Line of Hokkaido Railway Company