Edinburgh’s version of the Sistine Chapel is this former church, with an interior covered in paintings done by one woman over the course of nearly a decade.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A circle stone within a stone circle.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

Warsaw's fantastically preserved gasworks...almost.

This once-abandoned mansion is now a dreamy event space.

A dark tunnel leads to a striking white crater that seems to be from another planet.

The burial place of some of Mexico's most prominent residents is full of macabre stories and hidden masonic symbols.

Diego Rivera's massive tiled fountain and failed infrastructure project.

This Victorian graveyard in Leeds is a macabre collection of beautiful tombs and memorials.

An extraordinary collection of scientific instruments - and Einstein's chalkboard - inside the world's oldest purpose built museum building.

The beloved fantasy novelist is buried near a church containing a whimsical etched glass window full of Narnia favorites.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

It celebrates a very stinky task and salutes London's fatberg-vanquishing team.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

Collection dedicated to brands, packaging and advertising.

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

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

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

The fountain marks the area where hundreds of accused witches were burned at the stake.

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