Places iren Wants to Go

You can walk up Thailand’s naturally non-slip waterfall.

An inconspicuous footbridge beloved by San Diego locals.

This abandoned Slovenian military barracks has become a punky-political art squat.

This massive subterranean fissure is known as the "underground Grand Canyon."

Roman ruins top white travertine terraces formed by ancient hot springs.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

A Nesting Doll of Churches.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

The largest medieval water tank on the Iberian Peninsula is preserved beneath the Cáceres Museum.

This underwater graveyard commemorates a group of murdered 16th-century missionaries.

This surreal-looking tree pruned more than 1,000 years ago is still producing olives for oil.

Abandoned Nazi train station turned underground astroparticle laboratory.

A completely underwater art museum sends a stark message about humans' impact on the environment.

Known for centuries as the famous Roman emperor's burial place, this monument is actually something else.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

An abandoned 17th-century baroque hunting lodge with a wonderfully strange architectural plan.

A massive marble foot is tucked away in a small alley near the Pantheon.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

This cliff-face port is considered a masterpiece of mining engineering.

The steel cable lets adventurers zoom between two mountain towns at speeds of up to 75 miles per hour.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.