We passed through Austria on a train trip from Venice to Munich.
If Luxembourg's flag looks the same as the Netherlands flag, it is! Luxembourg's flag was officially adopted 1972, although used since 1848. After gaining its independence from the Netherlands in the late 1800s, its flag uses a combination of red, white and blue colours that date to the 13th century, and the Grand Duke's coat of arms. We Flew into Luxembourg on a few occasions when Luxavia (LuxAir) was still operating.
We have driven through Belgium on a few occasions and have stopped in Brussels & Antwerp.
1984, 1985, 2001