A hidden subterranean installation offers a view of the sky.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

San Francisco's newly reopened hands-on science museum.

Early prototype for Frank Lloyd Wright's Guggenheim.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

An essential stop before plundering, BYO Cutlass.

Try not to get slimed in Tribeca.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Avoid gangster interaction while window-shopping.

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A modernist landscape of water and sci-fi concrete.

A forlorn fishing village on the coast of Labrador, full of shipwrecks and Spanish gold.

A lake formed in the basin of a massive impact crater takes the shape of an unbroken ring when viewed from above.

A modern day curiosity cabinet.