An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

These ornate arches show how the course of the River Thames has changed.

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

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

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

The medieval woodcut-style artwork chronicles life in medieval London.

The star-studded street honors the city's most notable Brummies.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

A 15th-century former coaching inn forms the implausibly grand entrance to a 1980s shopping mall.

These 90-year-old murals of local kings, Vikings, and outlaws hide in plain sight in a beautifully baroque shopping arcade.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

A hands-off space for graffiti artists to hone and display their skills.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

Breathtaking and huge 430 year old maps of Italy.

A seaside town with no sea in sight.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

A tongue-in-cheek arcade where the games are based on everyday life.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

One of the only single-person private gravesites in New York City.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.