Science
This planet has the largest volcano in the Solar System, Olympus Mons.
Mars
This ancient structure in southern England is aligned with the sunrise on the summer solstice.
Stonehenge
This country's flag features a dragon holding a jewel.
Bhutan
This element, with the symbol W, is named after the Swedish word for "heavy stone".
Tungsten
This city is home to the Hagia Sophia, which has served as both a cathedral and a mosque.
Istanbul
This nation's flag contains five stars representing its major island groups and regions.
China
This scientist proposed the three laws of motion and the law of universal gravitation.
Isaac Newton
Built as a tomb for an emperor, this Roman landmark later served as a fortress, prison, and papal residence.
Castel Sant'Angelo
The flag of this country features a cedar tree and is sometimes called the "Land of Cedars."
Lebanon