Vatican City is completely located within the boundaries of this European city.
Vatican City is the only sovereign state located within the confines of a city.
What two word term in astrophysics is used to define a theoretical boundary around a black hole beyond which no light or other radiation can escape.
Wolfgang Rindler coined the term event horizon in the 1950s. He introduced it to describe the boundary in spacetime beyond which events cannot influence an observer.
The wrist radio that appeared in this comic strip created by Chester Gould was a notable pop-culture precursor to modern wearable technology.
Basing the character on famed federal agent Eliot Ness, The strip featured Tracy as a tough and intelligent police detective. The comic strip began in 1931, but the 2-way wrist radio was introduced in 1946 and quickly became an iconic emblem of the cartoon.
The flag of this U.S. state bears the the 17th-century heraldic arms of the Calvert and Crossland families.
The flag was not officially adopted as the state flag until 1904. The present flag is symbolic of the reunion of all the citizens in the state following the divisions of the U.S. Civil War.
La Goulue (The Glutton) and La Môme Fromage (The Cheesy Girl) rose to fame in the late 19th century dancing the can-can at what Parisian caberet?
La Goulue was one of Toulouse-Lautrec's favorite subjects. Several of his portraits and posters feature her dancing at the Moulin Rouge.
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