A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Walk in the footsteps of the gods and straddle two tectonic plates.

A sulfuric martian landscape that looks far better than it smells.

This scenic Icelandic lava flow is named for a pair of Berserkers who were murdered, according to a famous Saga.

A winding, blood-red tunnel of hardened lava navigable by foot.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Puffin enthusiasts flock to Europe's largest seabird cliff, which over one million birds call home.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

Climb right into the heart of this colorful Iceland volcano.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

A little-visited waterfall in an otherworldly landscape.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

A living memorial to the trees London lost during the Great Storm of 1987.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The sumptuous ceiling was one of the last things Charles I saw before his execution.