No clear info about travel taboos in Luxembourg. However, as with any country, it's important to be respectful of local customs and cultural norms while traveling. Some general things to keep in mind include being mindful of dress codes, particularly when visiting religious sites, and being aware of the local laws and customs. It's also important to be respectful of the natural environment and avoid activities that may harm the environment, such as littering or damaging natural habitats.

• Luxembourg is a trilingual country and French, German, and Luxembourgish are the official languages, and so it would be good to know some basic French, German or Luxembourgish, especially when visiting small towns or rural areas, where not everyone may speak English. Being polite and trying to use the local language, even if you're not fluent, is always appreciated.
• Also in Luxembourg, it is important to be aware of cultural sensitivities when it comes to historical events such as the World War II. Showing respect for the victims and avoiding any insensitive behavior or language is important.
• Luxembourg is also known for its picturesque landscapes, and it would be good to follow Leave No Trace principles and be mindful of preserving the natural environment, as well as any specific rules or guidelines that may be in place in certain areas or sites.

Luxembourg has a rich cultural heritage, and there are many festivals and celebrations that take place throughout the year. Some popular festivals include:

• National Day, celebrated on June 23rd, which marks the birthday of Grand Duke Henri and is celebrated with parades, concerts, and other events throughout the country.
• Fête de la Musique, an annual event that takes place in the capital, Luxembourg City, features a wide range of music performances by local and international artists.
• The International Film Festival Luxembourg, an annual event that takes place in the capital, features a wide range of films from around the world.
• Medieval festival of Vianden, which takes place in the town of Vianden in the summer, and it features a re-enactment of medieval life, and includes jousting tournaments, falconry demonstrations, and archery contests.
• Oktoberfest in Luxembourg City, an annual event where visitors can enjoy traditional German food and beer.
• The Christmas markets in Luxembourg City and other towns, which are popular during the holiday season, featuring food, drink, and crafts.

Luxembourg is a small landlocked country located in Western Europe, bordered by Belgium to the west and north, Germany to the east, and France to the south. The history of Luxembourg can be traced back to the Roman Empire, and in the Middle Ages, the region was part of the Holy Roman Empire.

• In the late Middle Ages, the House of Luxembourg, a powerful European dynasty, rose to prominence and gained control of the region. They established Luxembourg as a sovereign state and it became an important center of trade and finance. The city of Luxembourg was fortified and developed into a major fortress, and it played an important role in the Wars of the Middle Ages and the Hundred Years War.
• In the 19th century, Luxembourg industrialized and developed into a prosperous and financially stable country. However, in World War I, it was occupied by Germany and the country lost its neutrality. Luxembourg was liberated by the Allied forces in 1944 and regained its independence.
• After World War II, Luxembourg became a founding member of various international organizations, including the European Union, NATO, and the United Nations. Today, Luxembourg is a constitutional monarchy with a parliamentary democracy and a strong economy. It is also known for its picturesque landscapes and cultural heritage, including its historic fortifications and old town which is a UNESCO World Heritage Site.