The topiary maze at the Habsburg hunting lodge.

A unique art installation located on what was once considered the widest railway bridge in the world.

The pub has been in operation since 1819 on the banks of the Clyde.

This metallic cross was most likely the last thing a condemned person would see while on the gallows.

A British plaque explains that a house was built using the spoils of the first international golf bet.

The bell that once tolled atop a lost Edinburgh gate now hangs for all to see.

This historic timepiece was a popular meeting place for romantic rendezvous in the 1960s.

A building-sized painting of the renowned 19th-century American abolitionist.

A historic building houses one of the most important archaeological institutes in Europe.

The Greek War of Independence was declared at this medieval Byzantine sanctuary.

These abandoned salt flats are now a haven for wildlife.

One of the best-preserved medieval streets in Europe.

Poseidon? No one seems to know.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

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

One man's remarkable private collection of art from around the world.

One of the smallest bookstores on the planet.

Haunting graffiti left by prisoners of the Spanish Inquisition.