National Parks & Monuments. The Gateway Arch, or Gateway to the West, is an arch that is the centerpiece of the Jefferson National Expansion Memorial in St. Louis, Missouri. Collectable, iron on name patch. These patches will stick forever and will not fade. Although it can be ironed to any porous fabric, it was especially developed as an accompaniment to our Personal Travel and Adventure Tracking Towel (PTATT) to provide a way to chronicle your travels. Each time you visit a new location or fulfill a dream, you can document it by adding a patch to your towel. It’s a great way to showcase your adventures and help plan for the next one.