Try a St Petersburg City Tour to get to grips with the city's layout, or visit during the White Nights, the so called summer period when the sun never sets and consider extending your stay to discover Siberia; aboard the Trans-Siberian railway.St. Isaac's Cathedral When touring St. Petersburg, you may notice more than a few stunning castles and buildings. One of these is the St. Isaac's Cathedral - Isaakievskiy Sobor – which opened in 1858 and is today an extremely popular orthodox cathedral located at the very heart of St. Petersburg. This is the largest and tallest cathedral in Russia, standing in at 333 feet (102 m) and dedicated to Saint Isaac of Dalmatia. You can step inside this church and learn about the orthodox religion or simply view the beautiful architecture of the church. Datscha Love nightlife and bar hopping? Then Datscha is the best place for you! Filled with bars and clubs, this area is famous for loud music and low key drinking. Filled with shabby-chic decor and cheap drinks, you can enjoy a fun but also casual night out.