With lush plants and flowers, huge trees, ponds, and hidden monuments, this place feels a bit like discovering Narnia.

This supermarket offers shoppers a window into the past alongside their groceries.

Experience what life was like in Ireland during the Viking and medieval ages.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This 19th-century island fort built to protect against an invasion by sea.

One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

A marine aquarium with an astounding variety of fish hides in the basement beneath the famous Palm House.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

The ruins of a church destroyed by both the Great Fire of London and the Blitz, now turned into a peaceful garden.

A mineral spring that became all the rage in 17th-century England.

An unassuming London park is actually a pilgrimage site for modern clowns.

London's marvelous wildfowl reserve along the Thames.

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

The collection contains over 25,000 items and details the painful dental practices of the past.

These docile dragons are ideal inhabitants for the conservatory greenhouses.

The secret wartime bunker built on the platforms of an abandoned Tube station.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

London's largest outsider art museum.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.