Mysterious 500-year-old tapestries depict a unicorn hunt.

New York City's smallest piece of private property.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

Half curiosity cabinet, half late night hotspot, this Brazilian bar is helping turn a dangerous neighborhood around.

An enigmatic mural hiding in plain sight in one of São Paulo's busiest metro stations.

This intriguing museum chronicles the history and impact of immigration in Brazil.

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

This singular art museum in São Paulo is unique inside and out.

This park feels like a lush little jungle full of wildlife nestled within São Paulo.

Striking ruins of a mansion that stood center stage in one of modern Brazil's most puzzling crimes.

A snake farm famous for its venemous varieties.

A huge boat-shaped hotel with a blood red pool and other oddities.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

The bookstore with bookshelves built into unlikely places.

The crypts are so large they're basically their own underground church.

This demon atop the Notre-Dame de Paris looks utterly bored.

The celebrated eyesore created by starry-eyed sweethearts.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

The final resting place of the "father of special effects."

A series of abstract, silly sculptures represent the works of a great modern classical composer.