Places F40fan Wants to Go

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

This museum sits on the site of a decommissioned military communications base.

This tunnel entrance is built to resemble a grand castle but no one is quite sure why.

A lavish 16th-century mansion filled with spectacular staircases, fantastic frescoes, and gorgeous gardens.

A Roman temple perched over an Italian town, forgotten several times over.

Featuring the last fully walkable parapet walkway in Europe.

The chimney of a shuttered power station in the Po Delta is the second-tallest structure in Italy.

An extraordinary house museum and cabinet of curiosities in the heart of Florence.

A colossal aqueduct from the second century B.C., deeply hidden in a gorge on the outskirts of Rome.

An intact, still operating pharmacy from the 18th-century filled with numerous artifacts and paintings.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

The first Italian factory to produce locomotives is now a marvelous museum.

The ruins of this medieval castle now stand as a monument against all wars.

This historic floating crane became an unlikely symbol of the port of Trieste.

Hidden within this iconic mountain are a set of World War II bunkers once used by German forces.

Wonderfully preserved Victorian factory, complete with a preserved steam powered engine house.

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

This ruined 15th-century hermitage is steeped in myth and mystery.

This restaurant was removed from the famed sister ship of the Titanic and placed within a hotel.

After years of slow decline, a derelict Gothic castle is now being restored to life.

A sturdy relic of Britain's once crucial gunpowder industry is now a haunting Cornish ruin.

This abandoned oil depot produces world's longest echo in a manmade structure.

Astonishing rock formations dot the Brimham Moor landscape.