The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Concerts, art, offices, and a café in what used to be Berlin's first crematorium.

This landmark jazz venue is the oldest continuously running African-American club in the United States.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

A stately palace has been converted into the world's largest cannabis museum.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

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

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

Mountain where Jesus was first tempted by the Devil.

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

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

This cemetery features modernist statues as strange as its name.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

This colorful statue welcomes visitors to a Barcelona park.

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

A bookstore dedicated to the intersection of comedy and art.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

This mansion oasis contains gardens, sculptures, and fountains just off the busy Plaça Kennedy in Sant Gervasi.

This generously endowed statue once stood guard outside a Roman home.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

Read a book with a glass of wine at this classically restored bar.

An open-air "garden" of mural art that changes weekly.