At which latitude does the sun not set during the summer solstice?

At which latitude does the sun not set during the summer solstice?

Step 1: Understand what the summer solstice is. It is the longest day of the year, occurring around June 21st in the Northern Hemisphere.
Step 2: Know that during the summer solstice, the North Pole is tilted towards the sun.
Step 3: Learn about the Arctic Circle, which is located at 66.5°N latitude.
Step 4: Realize that at latitudes above the Arctic Circle, the sun does not set during the summer solstice.
Step 5: Conclude that the sun does not set at latitudes above 66.5°N during the summer solstice.

Latitude and Solar Position – Understanding how the position of the sun changes with latitude, particularly during solstices.
Arctic Circle – Knowledge of the geographical significance of the Arctic Circle and its relation to daylight hours.