Singapore's oldest Hindu temple.

This Singaporean food-court stall was home to the world's cheapest Michelin-starred meal.

A quiet patch of astroturf laid out between a building that seems to be splitting in half.

The oldest Muslim cemetery in Singapore, with a strong royal connection.

Singapore's landscaping project is home to 18 incredible Supertrees.

The busy transport hub is home to the tallest airport slide in the world.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

A Buddhist theme park brings you a Buddhist version of Hell.

Inside a London bookstore, a fireplace that once belonged to the illustrator responsible for a famous set of tarot cards.

One of the world’s leading and most extensive archives on the Holocaust, the Nazi era, and genocide, this collection includes published and unpublished works, press cuttings, photographs, and eyewitness testimony.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The anatomical-pathological collection of a man who changed surgery.

This museum inside a museum tells the story of London's timepieces.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

More than a million titles fill the labyrinthine shelves of this prestigious private library.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

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

Traveling collection of amazing automata.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Pop culture has helped to keep this iconic British building from being destroyed.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.