A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Visible below the waves are memorials to the city's Gold Rush dead.

One of the oldest living oak trees in the Southeast.

A collection of full-size movie monsters opened to the public.

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

An homage to everyone's favorite prehistoric cartoon family.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

This spectacular track has run continuously since 1882.

A modern mechanical planetary system, part of a 10,000 year clock.

A sculptor's dream castle turned fantastical ruin.

A hollow cement depiction of time's inexorable effect on the human body.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

An art deco ice cream shop covered in vintage train station tiles.

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

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

A spiritual retreat in the heart of Los Angeles offers stunning gardens and a labyrinth to lose yourself in.

This edible park is open to any and all foragers.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

The Boston square dedicated to the dark poet who was born nearby.

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