360° views of the city plus five floors of optical illusions and hands-on science.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

The heads of two giant mythological water horses honor Scotland's horselord past.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

A 200-year-old collection of oddities and medical paraphernalia.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

Two large posteriors in one giant statue.

Seaside ruins of a settlement that date back to the first century B.C.

Elaborate tile work in this railway station tells the story of Portugal.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

One of Ireland's most infamous prisons for rebels including men, women and children.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

Famously misunderstood wonder of the ancient world

Largest lake in Great Britain measured by surface area.

A wonder of natural limestone formations etched by millions of years of natural interaction between rainfall and rock and air.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This turn of the century masterpiece has a mysterious goaty interloper.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Golden Gate Park's historic collection of plants.

San Francisco's newly reopened hands-on science museum.

San Francisco’s condensed garden of incredible plant growth.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.