A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

The longest hedge maze in the world.

360° views of the city plus five floors of optical illusions and hands-on science.

Northern Ireland's Brobdingnagian stepping stones.

A 30-acre garden inspired by the principles of modern physics.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The atmospheric road was never meant to be so creepy.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Famously misunderstood wonder of the ancient world

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The world's largest collection of witchcraft regalia.

The sign at the garden gate reads: "These Plants Can Kill."

These fantastically named natural pools look like something out of a Scottish myth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

This archaeological site was the center of the extinct Yarmukian culture which developed the first roads and pottery in Israel.

Idol made by King Jeroboam for the Israelites.

An iconic view point of the Sea of Galilee offers a look into Israel's past.

The mosaic floor of a 4th-century synagogue features a pagan zodiac wheel alongside traditional images of a Torah ark and menorahs.

A magical oasis in the middle of the Negev Desert.

An ancient tunnel in Jerusalem built to redirect water in the event of a siege is one of history’s great architectural innovations.

A modern-day cabinet of curiosities housed in a 300-year-old inn.