Well this is interesting. Food world bad boy turned world-traveling culinary explorer Anthony Bourdain was spotted in the Bay Area this week, on Monday, at the much talked about and clearly endangered Sinbad's, for reasons we don't understand. Tablehopper got the tip, noting how remarkable it is that Sinbad's is holding on despite the Port of SF's aggressive efforts to evict them, and despite the fact that a judge basically ordered them out a month ago.

It's unclear what Bourdain was doing at Sinbad's exactly, but it looks like it will be part of a new episode of his CNN show Parts Unknown, which will air in the fall.

According to Bourdain's tweets, he was also visiting with SF jiu-jitsu master Ralph Gracie.

Update: Eater notes, via his Instagram, that he also dined at Swan Oyster Depot (a past favorite) and House of Prime Rib.

Previously, Bourdain has shot episodes of his former shows No Reservations and The Layover here, saying famously of SF in 2011, "It's a two-fisted drinking town, a carnivorous meat-eating town, it’s dirty and nasty and wonderful."

Previously: Drunk & Sticky: Best Bits Of Anthony Bourdain's S.F. 'Layover'