Only 68 people per day are allowed to visit this New Zealand bird-watcher’s paradise.

These memorials built by an eccentric bachelor on the side of Interstate 5 cause both wonder and traffic accidents.

Stones speckled along Harris Avenue reveal hidden nuggets of the past.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

A massive sea stack famous for its appearance in The Goonies.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

Only known mainland rookery of the threatened Stellar sea lion.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

A tunnel with windows, so you don't miss out on the impressive views.

On the Oregon coast is a natural hole that seems to be draining the sea.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A men’s restroom became a sandwich shop.

This former stomping grounds of the most eminent astronomers of the early 20th century.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

There's something big lurking beneath the surface of this tiny Oregon park.

Granting the right of way to ships over surface traffic since 1917.

Seattle's super-sized cowboy apparel once belonged to a themed gas station that wrangled in herds of tourists.

A "sinister, whimsical, tacky, and really orange" public art installation hidden under a Seattle bridge.

The first park built over a freeway is a brutalist masterwork.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

The highest point in Washington state is a volcano covered in glaciers.

See massive fossils that are over 200 million years old in northeastern Arizona.