The London Eye and Tate Modern are among the first SE1 attractions to accept payments in euros.
The British Airways London Eye will be accept euros as cash payment from people who buy tickets at the entrance when it reopens in February.
A London Eye spokeswomen said said: "Change will be given in sterling as euros are not common in this country. We'll be setting a standard rate of exchange following the Bank of England's rates."
Tate Modern's retail outlets and special exhibitions will also have provision for euro payments.