Alexander Hamilton’s creation caused quite a bit of controversy.

This elaborate towering structure was once famed for its revolutionary height.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

Yo, Adrian!

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

Pennsylvanian mass grave and possibly mass murder.

This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

A two-way chairlift system between Zugliget and the highest point in the city.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Museum dedicated to the terror regimes of Hungary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.

Be(w)ar(e) the moat around this historic Czech castle.

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

Steadily reminding Czechia of its past.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Monument to a suicide protesting the Soviet invasion.