â Samwell Tarly talks about the Wall. The Wall is a colossal fortification which stretches for 100 leagues (300 miles) along the northern border of the Seven Kingdoms, defending the realm from the wildlings who live beyond. The Wall is reported to be over 700 feet tall and is made of solid ice.
Opened in 1910, the National Museum of Natural History (NMNH) is part of the Smithsonian Institution, the worldâs preeminent museum and research complex.
Hotels closest to Smithsonian Museum. 1  0.4 mile Mandarin Oriental Hotel DC 1330 Maryland Avenue, Washington, DC 20024. 2  0.4 mile Holiday Inn Capitol DC 550 C Street SW, Washington, DC 20024. 3  0.5 mile Churchill at Newseum Residences 565 Pennsylvania Avenue Northwest, Washington, DC 20001.