Bowling Green, KY
Gateway to Mammoth Cave National Park (the world's longest known cave system at 426+ miles mapped) and to the National Corvette Museum. Bowling Green is home to General Motors' Corvette Assembly Plant — the only place in the world Corvettes have been built since 1981. The Corvette Museum's 2014 sinkhole event — eight Corvettes swallowed by a sudden underground collapse — became a global news story. The cars and the sinkhole are now both on display. Western Kentucky University anchors the town.
Bowling Green has built every Corvette since 1981, and the National Corvette Museum across the street from the GM assembly plant tells the full story — every generation, racing variants, prototypes, and the most famous moment in the museum's history: on February 12, 2014, a 60-foot-deep sinkhole opened in the Skydome floor and swallowed eight rare Corvettes. The collapse footage went viral; the museum kept the sinkhole as a permanent exhibit. Three of the cars have been restored, three are displayed as-is (mangled), and two were too far gone. From the air, the yellow Skydome is unmistakable.
The longest known cave system in the world — 426+ miles mapped and counting, with much more presumed undiscovered. From the air you see the rolling hardwood forests of the Mammoth Cave plateau; below you, an entirely separate world. The cave was a Native American ceremonial site for thousands of years (mummies, archeological tools survive deep inside), a saltpeter mine during the War of 1812, the world's second-oldest tourist attraction (since 1816), and is now a National Park and UNESCO World Heritage Site. Surface above is karst topography — sinkholes, springs, and the Green River winding through limestone canyons.
The 110-acre farm where Abraham Lincoln was born on February 12, 1809. The Memorial Building (1911, designed by John Russell Pope) is a Beaux-Arts neoclassical temple containing a symbolic log cabin meant to evoke (though not actually be) the birth cabin. The 56 steps leading to the entrance represent the years of Lincoln's life. The Sinking Spring — the actual water source for the Lincoln family — still flows. Pair with Knob Creek Farm 10 miles away, where Lincoln spent ages 2-7 and his earliest memories were formed.
The Grand Ole Opry is the longest-running radio broadcast in American history — it first aired in November 1925 and has run continuously every week since, making it nearly a century old and still going. It began as the "WSM Barn Dance," got its enduring name in 1927, and grew into the show that defined country music, the stage every artist aspires to be "inducted" into. After decades at the downtown Ryman, the Opry moved in 1974 to the purpose-built Grand Ole Opry House out by the Cumberland River, where a circle of oak floorboards cut from the Ryman stage was set into the new stage so performers still stand on the same wood. The adjacent Opryland complex and the vast glass-atrium Gaylord Opryland hotel grew up around it.