This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Odd stone and concrete monuments in the "Poet of the Sierras" eclectic folly garden.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A beach made of semi-precious green sand on the Big Island of Hawaiʻi.

This black shoreline is made up of exploded lava particles.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

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

This legendary urban waterfall creates a dazzling display of rainbows.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

Look closely and you’ll notice that the color changes a third of the way up the tower.

"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!”

This poor little statue is the most vandalized memorial in Washington.

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

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

This free, take-a-book shop seems like a trick but isn't.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

Breathtaking and huge 430 year old maps of Italy.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

The absurd creation is a compulsory destination for selfies in Buffalo.

A contemporary fresco movement illustrates the region's rich history.

This urban oasis is a marvelous meld of music and landscape architecture.

In Tucson a giant metal snake helps pedestrians cross a busy highway.