Larger in scale and more detailed. If Larger and more challenging is what you’re after ICONX is perfect for you! Make a BIG impression with our premium line of DIY metal models. From steel sheets to 3D models this ICONX collection offers a larger size with enhanced detail. Located in Washington D.C. the Capitol is the meeting place of the United States Congress. It sits atop Capitol Hill which is located at the east end of the National Mall. Construction began September 18 1793. The Capitol is built in the distinctive American neoclassical style with a white marble exterior.