In 1904 an earthquake of magnitude 5.4 on the Richter scale shook Oslo, with an epicenter in the "Oslo Graben" which runs under the Norwegian capital. There are now signs that indicate that we can expect a major future earthquake in Oslo.
An ordinary Soviet building manager, living in the 20th century, looks like Tsar of All Rus' - Ivan IV the Terrible (1530 - 1584). He'd never known this, until his neighbor created a time machine.