The California Trail; cowboy museum.
Newport, R.I.; colonial con artist's mansion; textile mill; Boston State House; Paul Revere's house; the Haymarket.
Seattle booms overnight as the first stop for miners in search of Yukon gold.
The boatmen of New Orleans plied goods and people up and down the Mississippi.
Shenandoah Valley to the Cumberland Gap; Civil War battlefields; Shaker community; Lexington, Ky., home of Stonewall Jackson; Museum of Horse Racing; Louisville Slugger bat factory.
New York City; Rye and Mystic, Conn.
Juneau-Skagway-Dawson City-Dead Horse, Ark.
Alaskan gold; Russian icons; Victorian saloons.
Seattle; Yukon gold strikes; Gold Rush Museum.
El Camino Real; Santa Fe, N.M.; mustangs.
Shenandoah Valley; Luray Caverns; Cumberland Gap; Shaker village.
Rogue's mansion; cotton mill; historic Boston sites.
The Old Post Road ran from New York to Boston.
Sierra Nevada; gold; mines.
Nashville, Tenn.; Civil War battleground; Fort Nashboro.
New Orleans; swamp tour; plantations; mansions; riverboat men.
Mormon exodus; Brigham Young; Salt Lake City.
California missions; Highway One; wine country.
The Mission Trail; Los Angeles.
Philadelphia; Valley Forge; Gettysburg; Amish community.