Drones recreated a never-built bell tower for a blue and white cathedral in this city, whose interior was completed in 1835. A park near this city contained an early roller coaster at the Riding Mountain pavilion. A residence (15[1])in the south (15[1])of that park (-5[1])near this city previously housed hanging gardens and features gilded rooms called the Golden Enfilade. That palace near this city, redesigned by Bartolomeo Rastrelli, (15[4])formerly (15[1])contained (15[1])a room dubbed an (*) “eighth (10[1])wonder” originally sculpted by (10[1])Andreas Schlüter. (10[2])That room, likely (10[1])destroyed in (10[1])a Königsberg (10[3]-5[1])air raid, (10[2])was made out of amber (10[1])panels (10[1])for a palace (10[3])near this city. (10[1])The Jordan Staircase is found in another residence (10[1])in this city now converted into the State Hermitage Museum. (10[3]) (10[1])For 10 points, name this (10[1])Russian city home to the Catherine and Winter Palace. (10[2]) ■END■