Sections
Subscribe
Renew
Shop
Subscribe
Give a Gift
Renew
Smart News
History
Science
Innovation
Arts & Culture
Travel
History
Archaeology
U.S. History
World History
Video
Newsletter
Science
Human Behavior
Mind & Body
Our Planet
Space
Wildlife
Newsletter
Innovation
Innovation for Good
Education
Energy
Health & Medicine
Sustainability
Technology
Video
Newsletter
Arts & Culture
Museum Day
Art
Books
Design
Food
Music & Film
Video
Newsletter
Travel
Africa & the Middle East
Asia Pacific
Europe
Central and South America
U.S. & Canada
Journeys
Newsletter
At The Smithsonian
Visit
Exhibitions
New Research
Artifacts
Curators' Corner
Ask Smithsonian
Podcasts
Voices
Newsletter
Podcast
Photos
Photo Contest
Instagram
Video
Original Series
Smithsonian Channel
Newsletters
Shop
Top of the Wall
Watch a time-lapse build of the Top of the Wall (01:00)
3play_processed
