Discover the splendor of the Taj Mahal in Agra, India, which inspired "Aladdin"; marvel at Segovia Castle in Spain, the fairy-tale backdrop for "Snow White"; admire Château de Chillon on Lake ...

I visited Delhi, Agra & Jaipur SOLO for the first time on ... It Led to Secret Tunnels Under an Ancient Castle. I toured the only nuclear-missile submarine in the US open to the public.