An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

Its walls are adorned with exquisite murals of the natural world, transforming it into an ecologist’s Sistine Chapel.

This “living museum” at UCLA exhibits thousands of plant species from all over the world.

This research hub in the Amazon Rainforest is perched amid one of the world's most biologically diverse landscapes.

This surreal-looking tree pruned more than 1,000 years ago is still producing olives for oil.

This Upstate New York park squeezes a lot of history into its two-acre triangular space.

This charming woodland trail is peppered with poetry.

This Scottish castle has witnessed clan rivalries, Jacobite uprisings, whisky smuggling, and more.

A gigantic sculpture garden is packed with innovative oddities.

From the Difference Engine to the Cray-1, all under one roof.

This Japanese-inspired labyrinth of hot springs is hidden in a Chilean forest.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

Gorgeous cave resemble a winter wonderland.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

Tiny horses tethered to antique rings are scattered around the city.

A shining treasure trove of fine Mexican silver dating back to the 15th century.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

A restored 1920s cascade stairway provides one of the best views of Oakland's Lake Merritt.

A hardware store Buddha statue installed to deter vandalism wound up attracting Vietnamese immigrants who came to pray.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

One of Monterrey's oldest buildings is perched atop a hill boasting impressive views of the city.

The grandiose interior of this bar speaks to its past as home to famous jewelers and railway offices.