Tikal National Park in Guatemala was used for a small scene showing the rebel base on the jungle moon of Yavin 4 in Star Wars: A New Hope. It is an easy location to find and a very popular tourist destination but I don't think very many Star Wars location hunters make the trip. I probably would have never made it myself but it turns out my wife is from Guatemala and I found out she had never visited Tikal so we planned a little side trip after visiting family.
2004 trip pictures.
2000 cousin's trip pictures.