The oldest certified bowling alley in the United States is in the basement of this century-old bar.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

This striking art museum holds an amazing series of curiosity cabinets.

The arboretum whose marshy soil sucked up the dreams of housing developers.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

Vikings and Evangelicals have both had a hand in this replica medieval church.

This cave holds a surprisingly colorful variety of geological oddities.

A unique botanical garden housed in three giant geodesic domes.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

An unusual house built using an iso-elastic membrane.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

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

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

West Africa's largest fishing port honors its artisanal fishing process.

These layered sandstone mountains in China look like they are made of pressed crayons.

Singapore's landscaping project is home to 18 incredible Supertrees.

This abandoned palace and the stupas around it conceal beautiful Buddhist frescoes, statues, and silk paintings.

A small town in Rajasthan has been dubbed the "City of Stepwells," and Raniji ki Baori is the queen.

This temple contains what might be the world's oldest optical illusion.

A pair of nearly 1,000-year-old temples profusely covered in meticulous stone carvings.

This magical and eccentric stepwell is a hidden treasure within the ancient fort city of Mandu.

Designed to serve primarily the Maharaja, this is an interesting variation on the traditional stepped well.

In Mumbai, a bright blue synagogue is the largest one for the Baghdadi Jewish community in Asia.