Headed to Philly this summer? Amtrak Guest Rewards members can use a ticket stub to take a child on an unforgettable adventure to 1776 — for free.

See “The Lights of Liberty Show” and experience the American Revolution as it happened, where it happened — with surround-sound headsets, special effects and hand-painted images projected upon the buildings where the historic events actually took place, including the Second Bank of the U.S., Carpenters’ Hall and a grand finale at Independence Hall. The shows begin at dusk, departing every 15 minutes from the PECO Energy Liberty Center at 6th and Chestnut Streets.

Just show your Amtrak ticket stub and receive one free children’s ticket for each adult ticket purchased.

To sweeten the deal, Amtrak is also offering 50-percent off the best available rail fare to Philadelphia with a paid regular adult, senior citizen or disabled discounted rail fare ticket, on ticket sales through Aug. 31, for travel through Sept. 30.

The Lights of Liberty Show is running now through Oct. 28. Tickets are $19.50 for adults, $16.50 for seniors and students and $13 for children 12 and under. Reservations are required; be sure to mention the Amtrak ticket offer when making your reservation.

For further information or to reserve tickets, call (215) LIBERTY or 1-877-GO-2-1776 or visit http://www.lightsofliberty.org