4 mentions on Trippy
Here's what Trippy members say about National Postal Museum:
"National Postal Museum- has the world's largest stamp collection." See More
"National Postal Museum Smithsonian American Art Museum National Portrait Gallery - This is across from the International Spy Museum which is expensive but fun." See More
"The National Postal Museum is right next door to Union Station, so that's really easy." See More
"From here, either walk to Union Station right next to the National Postal Museum or walk/metro to the Eastern Market which is a nice market (with great pancakes) and a fun area just to walk around and absorb a bit of the local ambiance." See More