The most visited, and possibly most controversial, museum in Germany.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

The home of half the world's population of critically endangered mountain gorillas.

Get tall with nature's lankiest beasts and their warthog friends at this Kenyan preserve.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

Go inside to really appreciate this 500-year-old technological masterpiece.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Plagued by riots, celebrity injuries and a tragic death, this amusement park has been demolished.

Try not to get lost in this picturesque Brazilian labyrinth of the dead.

Known as the "Finger of God," a dramatic rock formation resembles a divine hand extending towards the heavens.

This Brazilian palace island was once the site of the last grand ball before revolution.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

The largest library in Latin America owes its existence to an Old World earthquake and a Napoleonic invasion.

Beautiful public park off the beaten path and away from tourists.

A 125-meter long "tribute to the Brazilian people."

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

Go surfing on this urban wave, "hacked" by local surfers.

The scars of World War II are preserved on its walls.

This poignant tribute to the White Rose movement showcases artifacts related to the heroic anti-Nazi struggle.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.