The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This watchtower once presided over the Berlin Wall.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

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

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

Monument to a suicide protesting the Soviet invasion.

A mocking tribute to the past and modern leadership of Prague.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The modern birthplace of Irish freedom.

The ancient tomb acts as a calendar that keeps perfect time.

The severed head of a 17th-century Irish martyr lies within an intricate golden shrine.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Cat art as far as the eye can see.