Built for an exposition in 1915, these horticultural displays have stood the test of time.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

A breathtaking 19th-century trail overlooks Lake Tahoe.

The middle finger of modernity.

The oldest operating pharmacy in the world features 800-year-old recipes.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

Spiral labyrinth hidden in the hills above Oakland, CA.

An abandoned car and strange wooden debris are among the scattered remains of the old sand and gravel quarry.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

A 13,000-year-old mastodon skeleton was found during the construction of a 19th-century New York mill.

This giant monument of the RCA mascot is a beloved fixture in Albany, New York.

The Vermont square that inspired Shirley Jackson's "The Lottery."

The building that inspired Shirley Jackson's "The Haunting of Hill House."

More than 200 unconventional musical instruments that anyone can play.

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

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The overgrown ruins of a once thriving World War I-era copper mine.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.