This lovely, newly refurbished museum in Alexandria Park is a real gem. You can see the 1st floor of the palace interiors, all in Gothic Revival style.
Official website http://www.peterhofmuseum.ru/page.php?id=44
Phone +7 812 450 6071
Address Зверинская улица 19, 198510 Ст. Петербург, Россия
Coordinates 59°52'44.863" N 29°56'0.358" E