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Lightning rods, hidden hatches, and more.
Including Washington Monument Marble Stripe, Washington Monument Access Hatch, and Washington Monument Lightning Rod
Play real-life Chutes and Ladders at these obscure thruways.
Including Secret Tiled Staircase, Winfield Street Slides , and Howe Street Stairs
The literal underbelly of public agencies.
Including FDR’s Bomb Shelter, Steam Tunnels Under Capitol Hill, and Underground Tunnels of Los Angeles