I spent 3 hours walking up Miami's old 'Millionaires' Row,' and I was completely underwhelmed. Here's what it looks like.

Real-estate agents I spoke to told me the area is no longer in its glamorous heyday.

"It is not a location where the affluent are gravitating to," Melissa Rubin of Compass told me, adding that you can now easily find a condo for under $1 million.

According to Dina Goldentayer of Douglas Elliman, the change has to do with money getting younger.

"Those buyers — in their 30's and 40's — are strongly concerned by walkability," Goldentayer said. "That is why communities like the Venetian Islands have boomed the last 5 years because of their proximity to the hip Sunset Harbour neighborhood."

Collins Avenue is a wide avenue lined by palm trees and bordered by a narrow waterway to the west and luxury developments to the east.

While Millionaires' Row may have once been home to opulent single-family homes, now it seems to be mainly hotels and condominiums.

The few people I passed seemed to be mainly tourists.

Later, overheated and parched, I would regret not having hopped on it.

According to Rubin, the Eden Roc used to be a celebrity hotspot frequented by the likes of Jerry Lewis and Dean Martin.

"Women in their beautiful gowns [and] gloves would stroll down the stairs in the Eden Roc to be seen in their glory," Rubin said.

Rooms at the hotel now start at about $225 per night.

Apart from condominium buildings, hotels were really the only thing I saw on Millionaires' Row.

At the Grand Beach Hotel, which was built in 2009 and renovated in 2018, rooms start at about $190 per night.

They weren't nearly as large as some of the yachts I would later see at the Miami Beach Marina.

Collins Avenue did not seem very walkable to me.

With the cars rushing by and not much to look at apart from luxury high-rises, I felt like I was walking along a highway. It didn't help that the sun was baking down on me and I had stupidly forgotten to bring a bottle of water.

Some of them had fountains or other decorative accents out front, but to me, they all looked more or less the same.

Condos in the Blue Diamond condominium range from $777,000 to $4.69 million.

Some of the newer units or very large buildings have prices in the $2 million to $4 million range, he said.

In the Capobella, pictured above, available condos cost between about $1.3 million and $2.1 million.

Fellig said he still refers to the area as Millionaires' Row to clients "as it's such an important part of the history of Miami Beach."

I turned to trusty Yelp and Google Maps, searching for a grocery store, a café, a gas station — anything. To my surprise, there was ... nothing.

According to the apps, there wasn't a single place between 41st Street and 62nd Street on Collins Avenue where I could buy a bottle of water, which only reinforced my impression that the area wasn't meant for pedestrians.

At that point, I was even on the lookout for somewhere I could just sit and rest in the shade for a few minutes.

I sat on a bench and rested for a moment, thinking I could've ridden the free trolley all this way instead of walking and not missed out on anything.

MEi condos range from $599,900 to $3 million.

57 Ocean will include 71 "tropical modern residences," vertical gardens, a spa and pool deck, and a fitness center, according to its website.

Prices range from $1.5 million to $31 million.

While I'm sure the condos and hotels are quite luxurious, there was absolutely nothing to do on Millionaires' Row unless you live there.

As Rubin said, younger buyers are looking for walkable neighborhoods, and this stretch of Collins Avenue definitely isn't that.

"It is no coincidence that South of Fifth is the top condo community in Miami and also the most pricey with sales hitting over $3,000 per square foot," Goldentayer said. "Here, residents don't need a car as a 17-acre park, coffee shops, and top restaurants are the epicenter of the neighborhood."

South of Fifth was much more walkable and lively, but not overwhelmed with tourists like other parts of South Beach. The neighborhood is home to popular luxury condominium buildings such as Continuum and Apogee.

It's easy to find cafés, bars, restaurants, and bottled water — a stark contrast to Millionaires' Row.