This legendary urban waterfall creates a dazzling display of rainbows.

Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.

This wildlife refuge is home to more than 200 species of birds, as well as monkeys, lizards, and other wildlife.

The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.

The wreckage of a crash that killed nine people still litters the Franklin Mountains.

This mountain tram provides stunning views while hanging from a single, steel thread.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

One of the oldest cemeteries in Vermont is the final resting place of soldiers, politicians, and a famous author.

The largest arcade museum in the world chronicles the golden age of video games which ended promptly in 1987.

The oldest covered railroad bridge still standing in the United States.

Dedicated to a colonial woman who was hanged for being a Quaker.

Created by a local artist, these quirky sculptures each have their own names and personalities.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

Two mermen, eternally spitting into each other's mouths.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Commemorating the spot where the famous scientist fed his pigeons.

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

There’s a hidden military meme engraved on the World War II Memorial.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

The walls of the iconic dome are hollow and have a secret stairway.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.