The wedding was held on the roof of the Madison Luxury Apartments at 215 S. Madison St. in Pasadena.
The rooftop in the wedding scene is located at 34° 8'31.60"N, 118° 8'19.52"W.
After Howard and Bernadette say their vows and the aerial view of the the roof of the apartment building and wedding party are shown, both Mrs. Wolowitz and Mrs. Rostenkowski can be seen. Though their voice had been heard as in the case of Mrs. Wolowitz or they have been referred to by other characters as in the case of Mrs. Rostenkowski, this is the first time that either character has been seen.
The Russian Soyuz and the Sokol spacesuits that were worn by the astronaut and actors are Hollywood replicas, but true to the show's reputation, they are both surprisingly realistic.
Leonard asks, "Sheldon, what channel is NASA TV?" Sheldon says, "289, right between the Game Show Network at 288 and the East coast feed of the Disney Channel on 290." This is the NASA Channel on DIRECTV.