This Moscow-style church with richly coloured onion domes looks a bit out of place in the European centre of St. Petersburg, but it’s one of the city’s most beautiful and memorable landmarks. It got its awkward name because it was built on the spot where Tsar Alexander II was murdered in 1881. Locals call it ‘the mosaic church’ because the interior is covered with magnificent mosaics, each wall with a particular Biblical theme. It was renovated in the early 1990s and reopened as a museum in 1997.