Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

The remnants of a strange stilted building on rails can still be seen at low tide.

This craggy boulder is fabled to be either a druidic relic or Satan's stumbling block.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Week-long block party becomes a competition for the best decorated street.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Commemorating the spot where the famous scientist fed his pigeons.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Cryptic messages embedded in the New York City sidewalk.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.

Elevated freight railway turned wildly successful urban park.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

A roadside shrine to a late rock god only remains thanks to the unyielding efforts of his fans.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.