Key West's Southernmost Point buoy marks the end of the continental United States. A wooden sign once stood here, but thieves kept stealing it, so in 1983 officials poured 9.8 tons of concrete into a buoy nobody could carry off. Its formal name, rarely used, is the Southernmost Geographical Monument.

Cuba lies just 90 miles across the water, close enough to feel neighborly. This is not even the true southernmost spot: that honor belongs to nearby Navy property, off-limits to selfie-seekers. The buoy's Conch Republic emblem hints at a local streak of defiance, one that resurfaced in 1995 when a US Army training exercise simulating an invasion met a citizen flotilla armed with fire hoses, water balloons, and conch fritters.

VoiceMap's self-guided audio tours trace that thread from stolen signs to mock invasions, uncovering how Key West turned a geography lesson into a running joke about independence.