After a hundred years the memory of war can fade away faster than the scars on the land.

Coming up in the hour ahead, historian Mark D. Vanelz explains how you can walk in the footsteps of the first U.S. soldiers to fight in a major military campaign

overseas.

That was when U.S. forces took part in the First World War.

You can still walk through the woods there and you can still see some of the shell holes from the battle,

zigzag trenches going through the woods.

In Poland, the Gothic city of Krakow stands witness to how much life can change.

The cultural heart of Poland was once the Jewish

center of Europe. Then came the 20th century. About a quarter of the city was Jewish

all the way up until World War II. And for Europe's up-and-coming destinations, we'll get tips for touring the Balkan-back roads,

including scenic Montenegro.

It is a spectacular mountain landscape with a deepest river canyon in Europe and it will absolutely take your breath away.

It's all just ahead on Travel with Rick Steves.

One great way to connect with the locals is to speak the language, or at least some of it.

Rosetta Stone is a fast fun way to learn.

It's got helpful tools like online video chats with native speaking teachers.

You can take the Rosetta Stone demo or purchase the program at a special discount

at Rosetta Stone.com slash Rick Steves.

The battles were mostly centered in Europe, but World War I changed America forever as well.

Coming up, historian Mark D. Van Els tells us what the sacrifices of Allied and American troops can teach us today about the war to end all wars.

We'll also get visitor tips for exploring Poland's top attraction,

the cultural capital of Krakow.

...