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Atlantic Avenue Tunnel Tour in Brooklyn

The Atlantic Avenue Tunnel is officially the world's oldest subway tunnel. This tunnel was built in 1844 beneath a busy street in the City of Brooklyn (Brooklyn did not become part of NYC until a half-century later). The Atlantic Avenue Tunnel is a half-mile long and accommodated two standard gauge railroad tracks.

Bob Diamond rediscovered the long forgotten Atlantic Avenue Tunnel in 1980. He recently began giving tours by taking groups down a manhole in the middle of Atlantic Ave in Brooklyn.