In which country would you find the Blue Lagoon geothermal spa?

In which country would you find the Brandenburg Gate? In which country would you find the Charles Bridge? In which country would you find the Cliffs of Moher? In which country would you find the Giant's Causeway? In which country would you find the Meteora monasteries? In which country would you find Cappadocia? In which country would you find Pamukkale? In which country would you find the Blue Mosque?