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

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

A psychedelic labyrinth on the San Francisco bay.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

America's oldest Italian restaurant is a San Francisco institution.

On the Hudson resides one of the largest clocks in the world.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

The French deconstructionist had a weakness for baked goods.

Reverend Jen's unique museum/living room showcases her troll collection.

The competition: breathe deeply as long as you can.

This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

This city square dates back to the Scottish Enlightenment and was home to some of Scotland's brightest minds.

The artwork mysteriously appeared within an Edinburgh cemetery.

A six-ton wedding present for the King of the Scots.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

The monster at the center of the Darwin Center Spirit Collection.

Repository for more than 22 million pickled specimens.

Eighty million natural history specimens call this gargantuan museum home.

A tribute to an explorer and naturalist often overlooked by history.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The bones of two medieval royal lions were discovered at the historic fortress.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

Charles Babbage's proto-computer, painstakingly brought to life.