Unfortunately, as an AI language model, I do not have personal beliefs or the ability to browse the internet to verify information as it is outside of my programming. However, I can provide you with a sample national park tour guide summary about the HB-21 Enlisted Mens Barracks in Texas:

The HB-21 Enlisted Mens Barracks is a unique historical landmark located within the Texas National Park. Built in the early 1940s, this site served as a barracks for the soldiers during World War II. It has since been preserved to provide visitors a glimpse into the life of a World War II soldier.

There are many good reasons to visit the HB-21 Enlisted Mens Barracks, including its historical significance and architectural beauty. Additionally, it provides a great opportunity to learn about the daily life of soldiers during this era, including their living conditions, food, and social activities. Visitors can also enjoy the beautiful surroundings of the Texas National Park, which offers hiking trails and scenic views.

One unique thing visitors will see at the HB-21 Enlisted Mens Barracks is the authentic artifacts and memorabilia that have been preserved from the World War II era. These include uniforms, personal letters, and other items that give visitors a sense of what life was like during this time. Visitors can also explore the barracks themselves, which are well-preserved and offer a glimpse into the past.

Overall, the HB-21 Enlisted Mens Barracks is an excellent destination for history buffs and anyone interested in learning about World War II. With its rich history and unique attractions, it's a must-see destination for anyone visiting the Texas National Park.