Some locals believe the fabled lost gold of General Yamashida is hiding somewhere beneath the city.

This volcanically volatile island town is home to an abandoned series of tunnels left by the Japanese during WWII.

This remote Himalayan temple is in danger of being completely washed away by a melting glacier.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

An ancient burial ground believed to have been used for ritual sacrifice.

Common all over Japan, kōbans are small community police boxes, and now one is guarding one of L.A.’s megamalls.

Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

A ghost town at the airport is now a refuge for blue butterflies.

This glamorous old building is said to have inspired the Tower of Terror.

A blacklight mini-golf fever dream pays tribute to the iconic rock band.

Mine your own precious stones.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

This former lieutenant governor's home is brimming with curiosities.

The ornate structure is part of a building boasting more marble than the Vatican.

The commemorative stone column conceals a secret laboratory.

This Hollywood dive houses a mural painted by the artists who animated its namesake film.

This spectacular track has run continuously since 1882.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

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

This unusual subway stop was originally a real estate office.

The illuminating collection of L.A. street lights is run by the city and only opens one day per month.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.