This legendary urban waterfall creates a dazzling display of rainbows.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

This black shoreline is made up of exploded lava particles.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Ride the subways of yesteryear.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

An encyclopedic collection of mammal penises.

Perhaps the most scandalous statue of America's first president.

Dr Barnes' $25 billion private collection of art and arboretum.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

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

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A hand-built folk art installation covered with messages of God's love.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

A museum dedicated to exhibiting remarkable outsider art.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

A museum dedicated to the alleged Roswell Incident.