A proto micro-nation sometimes populated by artists, surrounded on all sides by a Utah most barren.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Visitors to this library are in for a real-world education in modernist architecture.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

One of the last Jazz Age "Wonder Theaters" in New York City.

The "Seinfeld" diner.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A sculptural commentary on capitalism pokes up from the East River.

The boulder on which Alexander Hamilton laid his head as he died can still be visited on the New Jersey coast.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

One of only two commuter aerial tramways in the United States.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Whether you're up or down, the Elevator Museum is worth a stop.

Read a book next to a Midtown waterfall.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

NYC's legendary underground network for bovine transportation.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.