A collection of colorful dinosaurs hidden in an actual rainforest.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

Instead of fruit, the branches of this tree are brimming with hopes and dreams.

The longest continuous lava tube in Oregon.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

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

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

A five-story homage to tea times past.

The canine-themed book collection claims to be Europe's largest dog library.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

Black cat statues guard this temple-like Egyptian revival factory.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

A memorial to a dog that inspired rioting in the streets of London.

Dictionary Johnson’s favorite feline.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

London's old-school healing garden.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Remnants of a Victorian garden feature sitting in public woodland.

Rebuilt remains of a temple to Roman god Mithras.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.