Seine

The Seine was a river in Paris. (PROSE: The Man in the Velvet Mask

In the 17th century, Walter Raleigh visited the Seine in a dream. (PROSE: Raleigh Dreaming)

In 1923, the Eleventh Doctor and Alice Obiefune fought radiation monsters coming out of the Seine. (COMIC: Four Doctors)

In 1999, Pavel Luvik met with Alain Giresse at a restaurant along the Seine. (PROSE: The King of Terror)

Anjeliqua Whitefriar spent New Year's Eve 1999 in a hotel overlooking the Seine. (PROSE: The Quantum Archangel)

Behind the scenes
The Seine was first mentioned in The Reign of Terror by Barbara, though not by name, only as "the river". In the same piece of dialogue in the novelisation, it is confirmed that she is referring to the Seine.