This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The curios of pharmacist and collector Henry Wellcome.

An unusual round church in London with a Templar past.

Most often copied TV Tower in the world.

A quiet memorial to those who died saving others in the heart of the City of London.

The broken skateboards that became a poignant memorial to a murdered skater.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Money made from smuggling sugar helped create this wondrous rock maze in honor of the Prussian Queen Louise.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Sweden's oldest animated sign is still lighting up the skyline today.

Preserved "bog person" that is over 2,000 years old.

The remains of Crystal Palace Great Exhibition of 1851.

Abstract dinosaur models in London.

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

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

Digger attempting to hide itself under 300 tons of rubble.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Murals of the wild parties once held on the frozen River Thames.

A recently restored Shoreditch landmark with ties to Jack the Ripper.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”