Human Geography

Ambassador Bridge

The busiest U.S.-Canada commercial crossing

Bridge of the Americas

A free crossing linking El Paso and Ciudad Juárez

Brooklyn Bridge

The historic stone-towered span over the East River

Calexico East Port of Entry

A major California-Mexicali commercial crossing

Charlotte Douglas International Airport

A major Southeast hub in the Carolinas

Chesapeake Bay Bridge-Tunnel

A 17-mile crossing of bridges and undersea tunnels

Dallas-Fort Worth International Airport

A Texas mega-hub larger than the island of Manhattan

Denver International Airport

The largest airport in North America by land area

Detroit-Windsor Tunnel

An underwater road crossing to Canada

George Washington Bridge

The double-decked Hudson River span into Manhattan

Golden Gate Bridge

San Francisco's iconic orange suspension span

Harry Reid International Airport

Las Vegas's airport beside the Strip

Hartsfield-Jackson Atlanta Airport

The world's busiest airport by passengers

John F. Kennedy International Airport

New York's primary international gateway

Los Angeles International Airport

The West Coast's great gateway to the Pacific

Mackinac Bridge

The five-mile span linking Michigan's two peninsulas

Miami International Airport

The main air gateway between the U.S. and Latin America

New River Gorge Bridge

West Virginia's great steel arch over the New River

Nogales Port of Entry

Arizona's main gateway and a winter-produce funnel

Northwest Seaport Alliance

The combined ports of Seattle and Tacoma on Puget Sound

O'Hare International Airport

Chicago's vast hub at the center of the country

Orlando International Airport

The gateway to Central Florida's theme parks

Otay Mesa Port of Entry

San Diego's main commercial truck crossing into Mexico

Peace Arch

A monument straddling the U.S.-Canada border

Peace Bridge

A busy Niagara River crossing into Canada

Port of Baltimore

A deep inland harbor at the top of Chesapeake Bay

Port of Charleston

South Carolina's deep-water Atlantic container port

Port of Houston

The energy port at the end of a 50-mile ship channel

Port of Los Angeles and Long Beach

The busiest container port complex in the Americas

Port of New York and New Jersey

The great harbor that built a metropolis

Port of Oakland

Northern California's main container port on San Francisco Bay

Port of Savannah

The largest single container terminal in North America

Port of South Louisiana

The Mississippi River's great bulk-cargo port

Port of Virginia

The deep natural harbor of Hampton Roads

Royal Gorge Bridge

One of the highest bridges in the United States

San Ysidro Port of Entry

The busiest land border crossing in the Western Hemisphere

Seven Mile Bridge

The Overseas Highway's long leap through the Florida Keys

Sunshine Skyway Bridge

The golden cable-stayed span across Tampa Bay

Tacoma Narrows Bridge

The Puget Sound span famous for its 1940 collapse

Verrazzano-Narrows Bridge

The longest suspension span in the Americas

World Trade Bridge

The busiest commercial land crossing in the U.S.