Singapore's landscaping project is home to 18 incredible Supertrees.

A curious friendship between two inanimate ladies.

Cemetery featuring rare glass-fronted columbarium.

This cemetery features modernist statues as strange as its name.

Faceless white figures loom over the city from the rooftop.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

A 30-acre garden inspired by the principles of modern physics.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

Tubing through a cave lit with glowworms is a magical underground experience.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

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

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

Cryptic messages embedded in the New York City sidewalk.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

Plot your trip through the city on the sidewalk.

A very classy 1920s-era bar right in Grand Central Station.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

More gold than anywhere else, ever.

A dilapidated dock tells the story of Titanic's missed arrival.

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