This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

This institution celebrates the happy accidents of uncommon sticktoitiveness.

This friendly fellow was built to honor an advancement in mineral processing.

Half of a waterfall goes into the river while the other half seems to disappear.

Duluth mineral magnates built this charming art deco lodge to be their private clubhouse.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

An ancient knight and a symbol of the city's freedom.

Picturesque basketball courts sheltered by historical defensive walls and with an enviable sea view.

One of the very few mosques built by the Ottomans still standing in Croatia is now a Catholic church.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

This former estate of a fascist leader is now a burnt out ruin leading to a system of secret tunnels.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

Instead of faces, these sculptures have barcodes—statements on societal dehumanization.

At the western edge of Palm Springs, a rugged desert canyon trail leads to a waterfall at the base of the San Jacinto Mountains.

Few of the many visitors to this resort town know of its hidden Maya ruins.

One of Mexico's least-visited archaeological sites is tucked away inside a theme park.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

One of the world's tallest, oldest, and most disgusting chocolate cascades.