der Boulevard
boulevard
A wide, impressive avenue in a city, often with trees, sidewalks, and shops.
Wir sind den ganzen Boulevard entlang spaziert und haben die Schaufenster bewundert.
We walked all along the boulevard and admired the shop windows.

boulevard
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boulevard
A wide, impressive avenue in a city, often with trees, sidewalks, and shops.
Wir sind den ganzen Boulevard entlang spaziert und haben die Schaufenster bewundert.
We walked all along the boulevard and admired the shop windows.

The word 'Boulevard' (boulevard) comes from French and has kept its original meaning as a 'breite Prachtstraße' (wide, grand avenue). The pronunciation is often modeled on French.
In Paris gibt es viele berühmte Boulevards.
There are many famous boulevards in Paris.
You can recognize the meaning from context. If the topic is urban planning, architecture, or walks, it refers to the street. If the topic is media, news, and scandals, it refers to the sensationalist press.
Wir trafen uns in einem Café auf dem Boulevard.
We met in a café on the boulevard.
When the street is meant, the preposition 'auf' (on) with the dative is often used to describe the location. Typical verbs are 'spazieren' (to walk), 'flanieren' (to stroll), or 'entlanggehen' (to walk along).
Am Sonntag flanieren viele Menschen auf dem zentralen Boulevard der Stadt.
On Sundays, many people stroll along the city's central boulevard.
In the figurative meaning referring to the press, 'Boulevard' (tabloid press) is often used as a collective term. Common combinations are 'die Boulevardpresse' (the tabloid press) or 'das Boulevardblatt' (tabloid newspaper), which refer to sensationalist newspapers.
Er liest nur die Schlagzeilen der Boulevardpresse.
He only reads the headlines of the tabloid press.
avenue
'die Allee' and 'der Boulevard' can both mean a wide road with trees. The most important difference is the location and the impression they give. An 'Allee' can also be outside the city and is mainly recognizable by the regular rows of trees on both sides. A 'Boulevard' is typically in a city and feels large, impressive, and often lively, for example with shops and wide sidewalks. The words can be confused because both types of street often have trees. If the row of trees is the important point, 'Allee' fits better. If you mean a large, grand street in the city, 'Boulevard' is more precise.

Am Abend gingen wir über den Boulevard und sahen uns die Schaufenster an.
In the evening, we walked along the boulevard and looked at the shop windows.
Wegen der Baustelle fahre ich heute nicht durch die Allee am Park.
Because of the construction site, I’m not driving through the avenue by the park today.