paradise on earth

come down to earth

To be brought back to reality; to emerge from a daydream.

cost the earth

To be a huge expense.

edge of the earth

A very remote place.

fool's paradise

A state of happiness due to illusion or false hope.

go to the ends of the earth

To do everything possible to achieve something.

God's green earth

The world.

green in earth

Of a deceased person, recently buried.

hell on earth

A very unpleasant situation; torment, particularly when widespread.