#5 - Claustrophobic and crowded
STATUE OF LIBERTY, NEW YORK CITY
To reach the platform in Lady Liberty’s crown, you’ll have to trek up a claustrophobic, crowded, 146-step double-helix spiral staircase with just six feet of head clearance. Or, if you are really brave, make the entire tight 377-step hike up all the way from the lobby, the equivalent of climbing a 20-story building.