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

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

Memorializing an American tragedy of massive proportions.

It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

Rummage through this sunken ship, but leave your scuba gear at home.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

This experiment in the lifespan of seeds will take a century before it is complete.

Oldest existing wire suspension bridge in the United States.

A winding, cliffside stretch of road overlooking the Delaware River.

According to the experts at the Guinness World's Record office, this is the longest candy counter in the world.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

A wall of chewing gum moonlights as collective art.

This beautiful, historic church looks like something out of a simpler past.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

This abandoned factory on the Hudson River once churned out a million bricks a week.

This abandoned ironworks was once the most important military supplier in America.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.