There are many interesting places across the street. You can visit them and sometimes you will have to, for example, observe them. Below there is a short description of many locations, counting from the left to the right:
607 -BUTIQUEnal boutique and Hard Rick Cafe. You cannot buy anything there, but you will have a few tasks to do there.
609 -Louie's pizzeria. Unofficial headquarters of the mob. Inside and in front of the restaurant you will find mob members that will give you tasks. Inside you can also eat tasty pizza that will regenerate your stamina.
611 - Iwon's liquor shop. The favorite spot of petty thieves, you will be frequently called there.
613 -Froggy's Peep Show and Karin's Jewelry. At least one gun robbery and a few thefts will occur here.
615 - Adamski's grocery shop and Hot-Dog booth. This friendly, but parsimonious Jew will frequently ask you for help with petty thefts. Despite the fact that it is a grocery shop, you won't be able to buy anything there. Around the noon a food booth will be opened in front of his shop - there you can buy tasty fast food for 3 dollars (+1 stamina).
617 - Matthias's car shop. You cannot enter the building, but a few tasks will be related to it.
619 - an empty spot. Sometimes you will be guided there by information about a spot between 617 and 621. In the middle there is a tin shed. Some sham businesses will take place here.
621 - Krank's pharmacy. The German will frequently help you by providing specific drugs for specific tasks.
627 - Moonwalk. A very friendly woman named Norma is running it. You can count on free breakfast and lunch if your relations with citizens is good. You can also eat afternoon dinner here for 30$.
629 - Church. Priest Mushroom is running the place. You can provide a contribution for the mob or the Crew in order to improve your relations with them. A few calls and one longer task take place here.
631 - Harry's laundry and doughnut shop Makefat You'Butts. You will come here mostly for free doughnuts.
633 - At the end there is a Hi-Fi shop with various TVs, radios etc. There is a Pawn Shop here as well. Inside you can meet Jerran, the leader of the local black gang. Many crew members can be found here, they can give you interesting tasks.