The underground "lobby" at Carlsbad Caverns National Park.
It had been a long-time goal of mine to see the caverns. My first attempt was on my first business trip for my previous employer. The government had been shut down by political games and I found myself staring at orange pylons blocking the entrance.
On my last trip for that employer I found myself once again in the area and dropped in for a few hours to explore. The caverns were open and I fulfilled my ambition to walk through them marveling at their amazingly whimsical formations.
Synchronicity at its finest.