City where you won't find Virgil's tomb / MON 1-18-21 / 1986 sci-fi sequel set in deep space

Constructor: Jeff Stillman

Relative difficulty: Medium (3:01)

THEME: American / European cities — four cities in America, clued as *not* their European namesakes:

Theme answers:

• PARIS, TEXAS (17A: City where you won't find the Eiffel Tower)
• ATHENS, GEORGIA (24A: City where you won't find the Parthenon)
• NAPLES, FLORIDA (46A: City where you won't find Virgil's Tomb)
• TOLEDO, OHIO (56A: City where you won't find the El Greco museum)

Word of the Day: Virgil's tomb (see 46A) —

Virgil's tomb (Italian: Tomba di Virgilio) is a Roman burial vault in Naples, said to be the tomb of the poet Virgil (October 15, 70 BC – September 21, 19 BC). It is located at the entrance to the old Roman tunnel known as the Crypta Neapolitana or grotta vecchia in the Piedigrotta district of the city, between Mergellina and Fuorigrotta. // Virgil was the object of literary admiration and veneration before his death. In the following centuries and particularly in the Middle Ages his name became associated with legends of miraculous powers and his tomb the object of pilgrimages and pagan veneration. At the time of Virgil's death, a large bay tree was near the entrance. According to a local legend, it died when Dante died, and Petrarch planted a new one; because visitors took branches as souvenirs the second tree died as well. (wikipedia)

This seems a pretty decent set of answers, and a pretty original way to clue them all ("City where you won't find..."). Wish there'd been a way to include the one glaring omission from this set: MOSCOW, IDAHO. While it's true that Moscow, ID is not as nationally well known as any of the others, there is a major university there (the University of Idaho); my mom grew up in Idaho, my grandma lived there until her death last year at the age of 99, and my aunt, uncle, and cousins used to live a short drive from Moscow (in Lewiston, ID), so I'll admit the place is probably more on my radar than it is on you, but still, the University of Idaho angle makes it legit and at 11 letters long it could've sat in the middle of the grid. The puzzle probably would've ended up more Tues. or Wed.-level in difficulty, though, just because Moscow, ID is a little more obscure, and the grid would've been tougher to fill cleanly, but it probably would've worked. Still, this set is fine. And I learned something about Virgil's tomb, which, who knows, maybe will come in handy when I start teaching the Aeneid yet again in a few weeks.