The Smithsonian museum network isn't just in D.C. Its design museum is tucked in Andrew Carnegie's 64-room mansion and features a gift shop to conquer all gift shops. Read more.
Most people walk the main spiral, but the smaller staircases usually house exhibits by more emerging artists.
Hanging out on the Met steps is a New York tradition, and billionaire David Koch has pledged "at least $10 million" to renovate the fountains outside the museum. Read more.
The observation deck is a must for life-long New Yorkers and tourists alike. Skip the wait and go before a night on the town, or after a romantic date – the observation deck is open until 2AM. —Joey
