Texas Protected areas established in the 21st century 16th17th18th19th20th21st22nd23rd24th25th26th Subcategories This category has the following 4 subcategories, out of 4 total. Parks established in the 21st century (3 C)0–9 Protected areas established in the 2000s (11 C) Protected areas established in the 2010s (11 C) Protected areas established in the 2020s (6 C, 1 P)