ALLENTOWN, Pa. -

Summer's last hurrah is upon us. The 161st Great Allentown Fair is underway.

Tuesday is the free preview day, which lasts until 11 p.m.

The theme of this year's fair harkens back the days of the old west.

"There is The Great American Frontier show with horses, wolves and lumberjacks," said Bonnie Brosious, the fair's marketing director.

For many, however, music is still the main draw. Headliners include John Mayer, Toby Keith and the Zac Brown Band.

Starting Wednesday, tickets will cost $6 at the gate.

The fair runs through Labor Day.