Anonymously sculpted and donated, these sculptures made from poetry books and pages are sprinkled around the city.

A British plaque explains that a house was built using the spoils of the first international golf bet.

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

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

This ancient Egyptian obelisk still bears the wounds of World War I.

London's smallest police station is barely the size of a phone booth.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

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

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

The final resting place to 300 Victorian-era pets hides inside the city park.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

A little slice of Japan and its aesthetics in London's Holland Park.

In this breathtaking canyon, crocodiles bask on boulders and glide through the murky waters.

This series of waterfalls tumble into a radiantly blue river.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

A Mayan village preserved for centuries in volcanic ash.

The youngest volcano in Central America.

The crumbling remains of a once-grand building.

This group of small islands on Lake Nicaragua formed after an eruption of the Mombacho volcano.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.