360° views of the city plus five floors of optical illusions and hands-on science.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Colorful concentric circles honor a small Croatian town's supposed spot at the nucleus of it all.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

Legend has it that seven Anglo-Saxon kings were coronated on this stone, located in the appropriately-named town of Kingston.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

This site is both a remarkable reminder of the town's mining history and a fantastic government blooper.

A ruined Maya city that suffered a years-long case of mistaken identity.

A geothermal energy project gone wrong is fracturing the city's picturesque architecture.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

Iron Age runes and ruins hide in plain sight along this Portuguese beach.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

The above-ground crypts at this Catholic cemetery face north-south instead of the usual east-west.